MXPA06005170A

MXPA06005170A - Product and method for controlling flying insects

Info

Publication number: MXPA06005170A
Application number: MXPA/A/2006/005170A
Authority: MX
Inventors: Graham Kemmis Bruce; Junus Rosita; Stephen Ridley Philip; Balakrishnan Krishanthi; Raymond Bowman Gary; Andrew Thompson Ian
Original assignee: Reckitt Benckiser (Australia) Pty Limited
Priority date: 2003-11-07
Filing date: 2006-05-08
Publication date: 2006-10-17

Abstract

Insect control articles and methods of controlling insects comprising a cellulosic based substrate or matrix having a specified surface area impregnated and/or dosed with a vapour active pyrethroid in a carrier solvent, such that the vapour active pyrethroid is emanated into the environment at a rate of at least approximately 0.040 mg/h at a temperature of approximately 18-40°C.

Description

PRODUCT AND METHOD FOR CONTROLLING FLYING INSECTS FIELD OF THE INVENTION The present invention relates generally to the control of flying insects and more particularly to a cellulose-based substrate or matrix containing an active pyrethroid to light which is effective in the control of flying insects, particularly mosquitoes.

BACKGROUND OF THE INVENTION The control of flying insects in an internal or external area has traditionally been achieved by using articles or devices that distribute insecticide vapors into the atmosphere. Said articles or devices generally burn or heat a liquid or solid substrate to evaporate the active ingredient. For example, when controlling mosquitoes, spirals impregnated with an active ingredient are burned so that the heat of combustion causes the release of the active ingredient into the atmosphere, citronella oil candles are burned so as to heat the citronella oil and allow evaporation in the atmosphere, while electrical devices electrically heat the active ingredient so that they evaporate and disperse it in the atmosphere. Operated batteries are also used, products activated by fans to control mosquitoes. The aforementioned products require a source of energy in the form of combustion, heat or electricity. The rate of release of active insecticides from continuous action products such as spirals, candles, liquid evaporators and electrically heated support plates for mosquitoes are essentially independent of the surrounding environment, the activation force for discharge of the active ingredient that is supplied from the system. The aforementioned articles and devices used for mosquito control have disadvantages. The combustion of mosquito coils requires a safe combustion site and results in ash and smoke. The combustion of a candle exposes a naked flame and therefore also requires a secure combustion site. The use of electricity to heat an insecticide device is expensive in some developed countries and is not portable.

There are also moth repellent products at room temperature. that depend on the passive evaporation of the insecticide from a substrate in the environment. These products, which have been commonly used to control moths, do not require an external source of energy, such as combustion, heat or electricity to release the insecticide into the atmosphere. Preferably, an insecticide is required for these products that evaporates at room temperature. The concept of a moth repellent at room temperature has many benefits: it provides continuous and long-lasting protection; they are efficient; they are efficient because there is no need for a heating medium; and they are portable, modern and practical. The products at room temperature known above, however, also have disadvantages. First, many of the prior art products are only effective in small, enclosed spaces and / or require significant air movement for the insecticide to be effective in a larger area of space. Secondly, the inventors were not aware of some cost effective emanation products to the environment that are able to work efficiently using low doses of insecticide to control insects other than moths, such as mosquitoes. There is clearly a need for insecticide products, particularly products that are cost effective, that do not require external energy supply to be effective in the control of flying insects, particularly mosquitoes.

Although they recognized the brief arrival of prior art articles to control mosquitoes and termites, the inventors of the present have sought to provide an insecticidal product active in improved steam with high insecticidal potency in the continuous control of flying insects without the need for electricity, heat or combustion.

SUMMARY OF THE INVENTION The present inventors found an effective way to control flying insects, in particular mosquitoes, using a combination of substrate, active pyrethroid vapor and carrier solvent that allows pyrethroid emanation from the substrate at dose levels that achieve an effective emanation speed and are effective in cost. In a first aspect, the present invention is directed to a substrate or matrix with cellulosic base to control flying insects, the substrate or matrix with cellulosic base impregnated and / or dosed with an active pyrethroid vapor in a carrier solvent, wherein the substrate or matrix with cellulosic base has a surface area in the range of 50-5000 cm2, and the active pyrethroid vapor is present in an amount of approximately 2.0-3000 mg / m2, so that the active pyrethroid vapor is emitted in a ambient air movement without increasing at a rate of at least about 0.040 mg / h at a temperature in the range of about 18-40 ° C. In a preferred embodiment of the first aspect, the present invention is directed to a cellulose-based substrate or matrix for controlling flying insects, the substrate or matrix with cellulosic base impregnated and / or dosed with an active pyrethroid vapor in a carrier solvent, in where the cellulose-based substrate or matrix has a surface area in the range of 50-5000 cm2, the active pyrethroid vapor is selected from the group consisting of metofluthrin, transfluthrin, and penthrin, methotrine, tefluthrin, and fenfluthrin or mixtures thereof. and is present in an amount of about 2.0-3,000 mg / m2, and the carrier solvent has an evaporation rate in accordance with ASTM D3539-87 of less than about 1.0, a boiling point in the range of about 120-330. ° C and a Snyder Polarity Index in the range of about 0.0 - 4.0; so that the active pyrethroid vapor is emitted in an environment with no air movement at a rate of at least about 0.040 mg / h at a temperature in the range of about 18-40 ° C. In a second aspect, the present invention is directed to a cellulose substrate or matrix for controlling flying insects, the substrate or cellulose matrix impregnated and / or dosed with an insecticidally effective amount of an active pyrethroid vapor in a carrier solvent, wherein the carrier solvent has an evaporation rate in accordance with ASTM D3539-87 of less than about 1.0, a boiling point in the range of about 120-330 ° C and a Snyder Polarity Index in the range of about 0.0-4.0, so that the active pyrethroid vapor is emitted into the environment at a rate of at least about 0.040 mg / h. In a preferred embodiment of the second aspect, the present invention is directed to a cellulose-based substrate or matrix for controlling flying insects, the substrate or matrix with cellulosic base impregnated and / or dosed with an insecticidally effective amount of an active pyrethroid vapor in a carrier solvent, wherein the active pyrethroid vapor is selected from the group consisting of metofluthrin, transfluthrin, empenthrin, methotrine, tefluthrin, and fenfluthrin or mixtures thereof and the carrier solvent has an evaporation rate in accordance with ASTM D3539- 87 of less than about 1.0, a boiling point in the range of about 120 - 330 ° C and a Polarity Index in the range - of about 0.0 - 4.0, so that the active pyrethroid vapor is emitted into the environment at a speed of at least about 0.040 mg / h. In a third aspect, the present invention is directed to an article for the control of flying insects comprising: a) a substrate or matrix with a cellulosic base with a surface area in the range of 50 - 5000 cm2 impregnated and / or dosed with a active pyrethroid vapor solution in an amount of approximately 2.0 - 3000 mg / m2 in a carrier solvent, wherein the active pyrethroid vapor is selected from the group consisting of metofluthrin, transfluthrin, empenthrin, methothine, tefluthrin, and fenfluthrin or mixtures thereof and the carrier solvent has an evaporation rate in accordance with ASTM D3539-87 of less of about 1.0, a boiling point in the range of about 120 - 330 ° C and a Snyder Polarity Index in the range of about 0.0 - 4.0; the substrate or matrix with cellulosic base impregnated and / or dosed with the active pyrethroid vapor in an amount such that the active pyrethroid vapor is emitted into the environment with air movement without increase at a rate of at least about 0.040 mg / ha a temperature in the range of about 18 -40 ° C; and b) a protective material that is fixed to the substrate and / or matrix with cellulosic base, in said protective material the active pyrethroid vapor does not migrate and / or is not absorbed; wherein the substrate and / or matrix with cellulosic base exists in an open and closed manner such that when in the open form the pyrethroid is capable of emanating from the substrate into the environment and when it is in the closed form the protective material covers the substrate or matrix to minimize the emanation of the pyrethroid to the environment. In a preferred aspect of the third aspect, the present invention is directed to an article for the control of flying insects comprising: a) a substrate or matrix with a cellulosic base with a surface area in the range of 50 - 5000 cm2 impregnated and / or dosed with an active pyrethroid vapor solution in an amount of about 2.0-3,000 mg / m 2 in a carrier solvent, wherein the active pyrethroid vapor is selected from the group consisting of metofluthrin, transfluthrin, empenthrin, methotrine, tefluthrin, and fenfluthrin or mixtures thereof and the carrier solvent has an evaporation rate in accordance with ASTM D3539-87 of less than about 1.0, a boiling point in the range of about 120-330 ° C and a polarity index of Snyder in the range of approximately 0.0 - 4.0; the substrate or matrix with cellulosic base impregnated and / or dosed with the active pyrethroid vapor in an amount such that the active pyrethroid vapor is emitted into the environment with air movement without increase at a rate of at least about 0.040 mg / ha a temperature in the range of about 18 -40 ° C; and b) a protective material that is fixed to the substrate and / or matrix with cellulosic base, in said protective material the active pyrethroid vapor does not migrate and / or is not absorbed; wherein the substrate and / or cellulose-based matrix exists in an open and closed manner such that when in the open form the pyrethroid is capable of emanating from the substrate into the environment and when in the closed form the protective material covers the substrate or matrix to minimize the emanation of the pyrethroid to the environment. In a fourth aspect, the present invention is directed to an article for the control of flying insects comprising: a) a substrate or matrix with cellulosic base to control flying insects, the substrate and / or matrix with impregnated and / or dosed cellulose base with an insecticidally effective amount of active pyrethroid vapor in a carrier solvent, wherein the carrier solvent has an evaporation rate in accordance with ASTM D3539-87 of less than about 1.0, a boiling point in the range of about 120-330. ° C and a Polarity Index in the range of about 0.0-4.0 so that the active pyrethroid vapor is emitted into the environment at a rate of at least about 0.040 mg / h; Y; b) a protective material that is fixed to the substrate and / or matrix with cellulosic base, in said protective material the active pyrethroid vapor does not migrate and / or is not absorbed; wherein the substrate and / or cellulose-based matrix exists in an open and closed manner such that when in the open form the pyrethroid is capable of emanating from the substrate into the environment and when in the closed form the protective material covers the substrate or matrix to minimize the emanation of the pyrethroid to the environment. In a preferred embodiment of the fourth aspect, the present invention is directed to an article for controlling flying insects comprising: a) a substrate or matrix with a cellulose base to control flying insects, the substrate and / or matrix with cellulosic base impregnated and / or dosed with an insecticidally effective amount of an active pyrethroid vapor in a carrier solvent, wherein the active pyrethroid vapor is selected from the group consisting of metofluthrin, transfluthrin, empenthrin , methotrine, tefluthrin, and fenfluthrin or mixtures thereof and the carrier solvent have an evaporation rate in accordance with ASTM D3539-87 of less than about 1.0, a boiling point in the range of about 120-330 ° C and a Polarity index in the range of about 0.0 - 4.0 so that the active pyrethroid vapor is emitted into the environment at a rate of at least about 0.040 mg / h; and b) a protective material that is fixed to the cellulose-based substrate or matrix, in said protective material the active pyrethroid vapor does not migrate and / or is not absorbed; wherein the substrate and / or matrix with cellulosic base exists in an open and closed manner so that when in the open form the pyrethroid is capable of emanating from the substrate to the environment and when it is in the closed form the protective material covers the substrate or matrix to minimize the emanation of the pyrethroid to the environment. In a fifth aspect, the present invention is directed to an article for the control of packaged flying insects comprising: a) a substrate or matrix with a cellulosic base with a surface area in the range of 50 - 5000 cm2 impregnated and / or dosed with an active pyrethroid vapor solution in an amount of about 2.0-3,000 mg / m 2 in a carrier solvent, wherein the substrate or matrix with a cellulosic base impregnated and / or dosed with the active pyrethroid vapor in such an amount as the vapor of active pyrethroid is emitted into the environment without increase at a rate of at least about 0.040 mg / h at a temperature in the range of about 18-40 ° C; and b) a packaging material enclosing the substrate and / or matrix with cellulosic base, in said material the active pyrethroid vapor does not migrate and / or is not absorbed; wherein when the packing material enclosing the cellulose-based substrate or matrix is removed from the contour of the cellulose-based substrate or matrix the active pyrethroid vapor is free to emanate from the substrate or matrix with cellulosic base exposed to the environment to control insects flying In a preferred embodiment of the fifth aspect, the present invention is directed to an article for the control of packaged flying insects comprising: a) a substrate or matrix with a cellulosic base with a surface area in the range of 50 - 5000 cm2 impregnated and / or dosed with an active pyrethroid vapor solution in an amount of about 2.0-3,000 mg / m2 in a carrier solvent, wherein the active pyrethroid vapor is selected from the group consisting of metofluthrin, transfluthrin, empenthrin, methotrine, tefluthrin, and fenfluthrin or mixtures thereof and the carrier solvent has an evaporation rate in accordance with ASTM D3539-87 of less than about 1.0, a boiling point in the range of about 120-330 ° C and a polarity index of Snyder. in the range of approximately 0.0-4.0; the substrate or matrix with cellulosic base impregnated and / or dosed with the active pyrethroid vapor in an amount such that the active pyrethroid vapor is emitted into the environment without increase at a rate of at least about 0.040 mg / h at a temperature in the range of approximately 18-40 ° C; and b) a packaging material enclosing the substrate and / or matrix with cellulosic base, in said material the active pyrethroid vapor does not migrate and / or is not absorbed; wherein when the packing material that closes the substrate and / or matrix with cellulosic base is removed from the environment the substrate or matrix with cellulosic base the active pyrethroid vapor is free to emanate from the substrate or matrix with cellulosic base exposed to the environment for control flying insects. In a sixth aspect, the present invention is directed to an article for the control of packaged flying insects comprising: a) a substrate or matrix with a cellulose base to control flying insects, the substrate or matrix impregnated and / or dosed with an effective amount insecticidably of an active pyrethroid vapor in a carrier solvent, wherein the carrier solvent has an evaporation rate in accordance with ASTM D3559-87 of less than about 1.0, a boiling point in the range of about 120-330 ° C and a polarity index of Snyder in the range of about 0 - 0.040 mg / h so that the active pyrethroid vapor is emitted into the environment at a rate of at least about 0.040 mg / h; and b) a packaging material enclosing the substrate and / or matrix with cellulosic base, in said material the active pyrethroid vapor does not migrate and / or is not absorbed; wherein the packing material enclosing the cellulose-based substrate or matrix is removed from around the cellulose-based substrate or matrix, the active pyrethroid vapor is free to emanate from the cellulose-based substrate or matrix exposed to the environment to control insects flying In a preferred embodiment of the sixth aspect, the present invention is directed to an article for the control of packaged flying insects comprising: a) a substrate or matrix with a cellulose base to control flying insects, the substrate or matrix with impregnated cellulosic base and / or dosed with an insecticidally effective amount of an active pyrethroid vapor in a carrier solvent, wherein the active pyrethroid vapor is selected from the group consisting of metofluthrin, transfluthrin, empenthrin, methotrine, tefluthrin, and fenfluthrin or mixtures thereof and the carrier solvent has an evaporation rate in accordance with ASTM D3539-87 of less than about 1.0, a boiling point in the range of about 120-330 ° C and a Polarity Index in the range of about 0.0-4.04. that the active pyrethroid vapor is emitted into the environment at a rate of at least about 0.040 mg / h; Y; b) a packaging material enclosing the substrate or matrix with cellulosic base, in said material the active pyrethroid vapor does not migrate and / or is not absorbed; wherein when the packing material enclosing the cellulose-based substrate or matrix is removed from around the cellulose-based substrate or matrix, the active pyrethroid vapor is free to emanate from the cellulose-based substrate or matrix exposed to the environment for the flying insect control. In a seventh aspect, the present invention is directed to an article for the control of stable flying insects comprising: a substrate or matrix with a cellulosic base with a surface area in the range of 50-5000 cm2 moistened with a pyrethroid vapor solution active in an amount of about 2.0 - 3000 mg / m2 of the surface area and a carrier solvent, enclosed by a packing material, wherein the active pyrethroid vapor emanates from the cellulose-based substrate or matrix in an environment not increased to a speed of at least about 0.040 mg / h at a temperature in the range of about 18-40 ° C but does not migrate and / or is not absorbed in the packaging material; In a preferred embodiment of the seventh aspect, the present invention is directed to an article for the control of stable flying insects comprising: a substrate or matrix with a cellulosic base with a surface area in the range of 50-5000 cm2 moistened with a solution of active pyrethroid vapor in an amount of approximately 2.0 - 3000 mg / m2 of surface area and a carrier solvent, enclosed in the packaging material; wherein the active pyrethroid vapor is selected from the group consisting of metofluthrin, transfluthrin, empenthrin, methothine, tefluthrin, and fenfluthrin or mixtures thereof and the carrier solvent has an evaporation rate in accordance with ASTM D3539-87 of less than about 1.0, a boiling point in the range of about 120-330 ° C and a polarity index of in the range of about 0.0-4.0; so that the active pyrethroid vapor emanates from the cellulose-based substrate or matrix into the environment without increasing at a rate of at least about 0.040 mg / h at a temperature in the range of about 18-40 ° C but does not migrate and / or It is not absorbed in the packaging material. In an eighth aspect, the present invention is directed to an article for the control of stable flying insects comprising: a substrate or matrix with cellulosic base moistened with a solution of an insecticidally effective amount of an active pyrethroid vapor and a carrier solvent, having a speed of evaporation in accordance with ASTM D3539-87 of less than about 1.0, a boiling point in the range of about 120 - 330 ° C and a Polarity Index in the range of about 0.0 - 4.0 enclosed by a packing material; wherein the active pyrethroid vapor emanates from the cellulose-based substrate or matrix into the environment at a rate of at least about 0.040 mg / hr but does not migrate and / or is not absorbed into the packaging material.

In a preferred embodiment of the eighth aspect, the present invention is directed to a stable insect control article comprising: a substrate or matrix with a cellulosic base moistened with a solution of an insecticidally effective amount of an active pyrethroid vapor selected from the group consisting of metofluthrin, transfluthrin, empenthrin, methotrine, tefluthrin, and fenfluthrin or mixtures thereof and a carrier solvent has an evaporation rate in accordance with ASTM D3539-87 of less than about 1. 0, a boiling point in the range of about 120-330 ° C and a Polarity Index in the range of about 0.0-4.0 enclosed by a packing material; wherein the active pyrethroid vapor emanates from the cellulose-based substrate or matrix into the environment at a rate of at least about 0.040 mg / hr but does not migrate and / or is not absorbed into the packaging material. In a ninth aspect, the present invention is directed to a method for controlling flying insects comprising the steps of providing the substrate or matrix with cellulosic base or article for the control of insects according to the first to eighth aspects of the invention; exposing the cellulose-based substrate or matrix to an environment with air movement without increase; and c) allowing the active pyrethroid vapor impregnated in and / or dosed onto the cellulosic based substrate or matrix to passively evaporate in the environment. In a tenth aspect, the present invention is directed to a method of packaging a substrate or matrix based on cellulosic fiber or article for the control of insects according to the first to eighth aspects of the invention comprising the steps of: providing a packing material through which the vapor-active pyrethroid does not migrate and / or is not absorbed; form a sack with the packaging material; filling the bag with the substrate or matrix with cellulosic base or article for the control of insects; and d) seal the sack.

BRIEF DESCRIPTION OF THE FIGURES Figure 1 is a bar graph showing the% of Aedes Aegypti mosquitoes shot down in a 40 m3 test chamber when exposed to various paper sizes of 18 gsm dosed with 150 mg of metofluthrin. Figure 2 is a bar graph showing the % of knock down of Aedes aegyptis mosquitoes knocked down in a test chamber when exposed to various paper sizes of 18 gsm dosed with the same concentration of metofluthrin per square meter (100 mg on A4, 50 mg on A5, 25 mg on A6, 12.5 mg on A7 and 6.25 mg on A8 Figure 3 is a bar graph showing the aging at 28 ° C of A4 paper dosed with 2 mg of metofluthrin on the% of knockdown of Aedes aegypti mosquitoes in a test chamber 40 m3 Figure 4 is a graph showing the combined emanation profile of 14, 20 and 25 mg of metofluthrin from bleached paper (A4, 50 gsm) Figure 5 is a graph showing the rate of emanation of metofluthrin from the honeycomb configuration at 28 ° C. Figure 6 is a honeycomb configuration in cells with a surface area of 2bc + 2bd + 4ab DETAILED DESCRIPTION OF THE INVENTION The cellulose fiber substrate or matrix can be any substrate or matrix containing cellulosic fibers and includes but is not limited to ground wood pulp, chemical wood pulp, straw preferably wheat straw, bagasse (cane residue) of crushed sugar), esparto grass, bamboo, flax, hemp, jute and kenafrag fibers (cotton) cotton wool, and recycled waste paper in the form of, for example, woven, paper and cardboard. The cellulose-based substrate or matrix may be of varying degree and includes but is not limited to virgin, recycled, bleached substrates or matrices. It will be appreciated that different types of substrates or matrices with cellulosic base will affect the rate of emanation of active pyrethroid vapor from the substrate or matrix in the atmosphere. Preferably, the cellulose-based substrate or matrix is paper, more preferably, bleached paper. It will be understood that a "substrate" is something underlying or that it serves as a foundation or foundation and a "matrix" is something that gives origin or form to a thing or that serves to enclose it. Accordingly, it will be appreciated that the term "substrate" is more applicable to articles with flat cellulose base while the term "matrix" is more applicable to three-dimensional cellulosic based articles.

Preferably, the cellulose-based substrate or matrix according to the invention has a grammage in the range of about 12 gsm to less than 260 gsm, more preferably in the range of about 12 gsm to 150 gsm, even more preferably in the range of approximately 12 gsm to 40 gsm. More preferably, the substrate or matrix with cellulosic base has a grammage of about 18 gsm. According to the present invention, the cellulose-based substrate or matrix is impregnated and / or dosed with an active pyrethroid vapor. It is believed that the substrate or matrix "impregnated" with the active pyrethroid vapor when the pyrethroid is either partially or completely distributed in the material of the substrate or matrix in such a way that the pyrethroid fills all or some of the interstices of the material of the substrate or matrix and is directly retained in the substrate or matrix and supported in it. It is believed that the substrate is "dosed" with the active pyrethroid vapor when a specific amount of the pyrethroid is applied to the substrate or matrix and absorbed either partially or completely into the pores of the substrate or matrix. The cellulose-based substrate or matrix according to the invention is impregnated and / or dosed with an active pyrethroid vapor, preferably in an amount of about 2.0-3000 mg / m2, more preferably, about 2.0-1000 mg / m2. The active pyrethroid vapor is present in an amount which is insecticidally effective from the emanation into the environment. It will be appreciated that the amount of active pyrethroid vapor required per square meter will depend on the period of time that the active pyrethroid vapor requires to emanate from the cellulose-based substrate or matrix. For example, for a cellulose-based substrate or matrix that is required to be effective in the control of insects, such as mosquitoes, over a period of 100 hours, it is preferred that the substrate or matrix with cellulosic base be impregnated and / or dosed with the pyrethroid active in steam in an amount of about 16-320 mg / m2, more preferably about 130-320 mg / m2. Over a period of 300 hours, it is preferred that the cellulose-based substrate or matrix be impregnated and / or dosed with active pyrethroid vapor in an amount of about 48-960 mg / m2, more preferably about 390-960 mg / m2 . Over a period of 900 hours, it is preferred that the cellulose-based substrate or matrix be impregnated and / or dosed with the active pyrethroid vapor in an amount of about 144-2889 mg / m, more preferably, about 1170-2880 mg. / m2. Preferably, the cellulose-based substrate or matrix according to the various aspects of the invention has a surface area of about 50. - 5000 cm2, more preferably, 180 - 2400 cm2. In a preferred embodiment, a cellulosic based substrate or matrix surface area in the range of about 1250-2,400 cm2 is impregnated with about 20-40 mg of active pyrethroid vapor to achieve 100 hours of use, or about 60-120 mg of active pyrethroid in steam to achieve 300 hours of use, or approximately 180 - 360 mg of active pyrethroid vapor to achieve 900 hours of use. The phrase "surface area" is intended to mean the total or two-dimensional geometric surface area of the cellulose-based substrate or matrix that is exposed to the atmosphere or environment in which the active pyrethroid vapor will emanate. It will be understood that when the cellulose-based substrate or matrix is a piece of flat paper, the surface area is the sum of the area of both sides of the paper. Additionally, it will be understood that the surface area of any other configuration will be the sum of the surfaces exposed to the environment / environment.

Generally, the inventors have found that an increase in surface area increases the rate of emanation of active pyrethroid vapor from the substrate or matrix in vapor in the atmosphere. It will be understood that vapor-active pyrethroids are those that are volatile at room temperature without heat or combustion. Steam-active pyrethroids are preferably selected from the group consisting of metofluthrin (1.4 x 10 - 5 mm Hg / 25 ° C), transfluthrin (2.6 x 10 - 5 mm Hg / 25 ° C, 4.0 x 10 - 1 Pa / 20 ° C), empentrin (14 mPa / 23.6 ° C), malotrine, tefluthrin (8.4 mPa / 20 ° C, 50 mPa / 40 ° C), and fenfluthrin (1 mPa / 20 ° C). It will be appreciated that one or more vapor-active pyrethroids can be employed in the present invention. Preferably, the active pyrethroid vapor is metofluthrin. Metofluthrin has high potency against mosquitoes, flies and moths. The chemical name of metofluthrin is 2, 3, 5, 6-tetrafluoro-4- (methoxymethyl) benzyl- (EZ) - (1RS, 3RS); 1RS, 3RS) -2, 2- dimethyl-3- (prop-1-enyl) -cyclopropanecarboxylate, metofluthrin is available from Sumito or Chemical Company. The emanation or release of the active pyrethroid vapor from the substrate or cellulose-based matrix in the atmosphere / environment can be mentioned as the rate of release or rate of release and it will be understood that it means the depletion of an amount of active pyrethroid vapor of the cellulose-based substrate or matrix for a certain period of time and has a unit of measurement of mg / hour. The rate of emanation is a measure of the efficiency in the control of flying insects. The inventors found that the rate of emanation is affected by the surface area of the cellulose-based substrate or matrix and the amount of the active pyrethroid vapor impregnated and / or dosed on the substrate or matrix. The inventors of the present invention found that the emanation of an active pyrethroid vapor, preferably metofluthrin, from a cellulose-based substrate or matrix in the atmosphere at a rate of at least about 0.040 mg / h, more preferably at least about 0.075 mg / h, it is required to effectively control flying insects, particularly mosquitoes and termites. The inventors of the present believed that a lower emanation velocity of at least about 0.040 mg / h may be more effective in the control of flying insects such as termites, while a higher emanation rate of at least about 0.075 mg / h can be more effective in controlling insects such as mosquitoes. During the course of the specification, the emanation velocity of approximately 0.040 mg / h can be mentioned as the minimum effective emanation velocity (MEER). This MEER can be achieved by controlling a variety of parameters including but not limited to the amount of active insecticide in vapor impregnated and / or dosed on the cellulose-based substrate or matrix; the size, mass and folds of the substrate or matrix with cellulose base; temperature; and air flow. By virtue of the extrapolation, the inventors of the present expect the active pyrethroid vapor emanation rate of the substrate or cellulosic matrix of at least about 0.040 mg / h, preferably 0.075 mg / h, to be effective in insect control. flying, particularly mosquitoes, at a temperature in the range of about 18-40 ° C. The possibility of achieving the emanation of the active pyrethroid vapor from the substrate or cellulose matrix according to the present invention at low temperatures in the range of about 18-21 ° C contributes to the commercial viability of the various aspects of the invention. Preferably, the vapor-active pyrethroid is emitted from the cellulose matrix or substrate at a rate of at least about 0.04 mg / h, preferably at least about 0.075 mg / h, at a temperature in the range of about 18-40 ° C, more preferably about 21-35 ° C. It will be understood that an environment with non-augmented air movement refers to the movement of natural air passing over and / or through the cellulose-based substrate or matrix, thus allowing the active insecticide in vapor to emanate passively into the atmosphere. The use of fans, heat and other mechanical means of increasing air movement is excluded. Suitable areas include but are not limited to closed rooms and volumes of open spaces, such as patios and the like, with air movement provided by the movement of natural air. The cellulose-based substrate / matrix and the insect control devices of the present invention are used for the control of flying insects. Flying insects may be selected from but not limited to pests of Diptera biting (Order Diptera) such as mosquitoes (Culicidea Family), small biting flies (Ceratopogonidae Family), black flies (F. simuladae), flebótano (certain Psychodidae) and, chopping flies (several families for example Muscidae and Tabanidae) and non-biting dipterous insects (for example, flies and mosquitoes of several families which include, but are not limited to Muscidae, Calliphoridae, Drosophilidae and Psychodidae) and certain termites. { Order Lepidoptera). Preferably, the cellulose-based substrate / matrix and insect control devices of the present invention are used to control mosquitoes. It will be understood that "control" of the flying insect population includes but is not limited to any one of or a combination of killing, repelling or knocking down a flying insect. It will be appreciated that a typical way to measure the results of an insecticide is in the form of "tearing down". In the course of the specification, the term "passive emanation" is used to describe the process by which active pyrethroid vapor emanates from the substrate or cellulose-based matrix in the atmosphere without the application of external energy. According to the invention, the cellulose-based substrate or matrix is impregnated and / or dosed with the vapor-active pyrethroid, preferably metofluthrin, in a carrier solvent. The carrier solvent can be any solvent or combination of solvents in which the active pyrethroid vapor is soluble.

The inventors have identified three important physical properties of solvents that can be used to characterize and classify preferred carrier solvents. The first is the boiling point, the second is the evaporation rate in accordance with ASTM D3439-87 and the third is the polarity of the solvent that was determined by the polarity index of Snyder. (L. R. Snyder, J. Chromatografic Science, 1978, 16, 223). Preferably the carrier solvent has a boiling point in the range between about 33-330 ° C, more preferably about 50-265 ° C.

The carrier solvent may be selected from, but not limited to, chlorinated hydrocarbons (eg, 1,1,1-trichloroethane, dichloromethane, chloroform); alcohols (for example methanol, ethanol, n-propanol); ketones (for example acetone); mixtures of alcohol and ketone (for example acetone / ethanol (1: 1 by volume)); normal paraffins with a boiling range of about 155-276 ° C (for example Norpar 12); aromatized aliphatic hydrocarbons and mixtures thereof in the boiling range of about 33-265 ° C (for example, pentane, heptane, hexane, Exxsol D40, Exxsol D80 and Exxsol D100); isoparaffins in the boiling range of about 150-300 ° C (for example Isopar G, and Isopar M); glycol ethers in the boiling range from about 120-243 ° C; natural chemical flavors or synthetically derived, preferably in the boiling range of about 120-250 ° C (for example, monoterpenes and sesquiterpenes, including monoterpenic and sesquiterpene alcohols, aldehydes, ketones, esters, oxides and hydrocarbons such as linalool, geraniol , citronellal, citral, gerenial, menthone, linalyl acetate, bornyl acetate, 1,8-cineole and limonene); essential oils.

The inventors found that the use of low boiling point solvents with high evaporation rates, as defined later by dry dosing, will be effective as carrier solvents. The inventors have also found that the use of higher boiling point solvents with lower evaporation rates, as later defined by dry dosing, leads to a preferred embodiment of the invention. Furthermore, the inventors of the present invention surprisingly found that when the dry dosage and a solvent with a Snyder polarity index of less than about 4.0, preferably less than about 0.5, were employed, the release rates for the steam were selected. of active pyrethroid from the substrate with increasing cellulose base. The substrate or matrix with cellulosic base is impregnated and / or dosed with the active pyrethroid vapor, preferably metofluthrin, by dry or wet dosage. By dry-dosing, it is meant that the active pyrethroid vapor is applied to and carried on the substrate or matrix with cellulosic base in the presence of a carrier solvent. The active pyrethroid vapor, preferably metofluthrin, is dissolved in the carrier solvent and the resulting solution is applied to the cellulose-based substrate or matrix so that the active pyrethroid vapor is distributed, preferably uniformly, throughout the entire substrate. or matrix with cellulose base. The carrier solvent used in wet dosing is preferably a solvent that does not evaporate in about 10 minute applications on the cellulose-based substrate or matrix and more preferably is characterized as having a high boiling point and a low evaporation rate. Preferably, the wet dosing carrier solvent has a boiling point in the range of about 120-330 ° C, more preferably about 150-265 ° C, and may be selected from known solvents including but not limited to normal paraffins with a range of of boiling point of about 155 - 276 ° C, such as Norpar 12; aromatized aliphatic hydrocarbons and mixtures thereof in the boiling range of about 150-265 ° C such as Exxsol D40, Exxsol D80 and Exxsol D100; isoparaffins in the boiling range of about 150 -300 ° C such as Isopar G and Isopar M and glycol ethers in the boiling range of about 120-243 ° C. In a preferred embodiment, the carrier solvent used in wet dosing has an evaporation rate in accordance with ASTM D3539-87 of less than about 1.0, a boiling point in the range of about 120-330 ° C, preferably about 150. - 265 ° C and a Snyder Polarity Index in the range of about 0.0 - 4.0, preferably of about 0.0 - 0.5. It was found that the release rate of the active pyrethroid vapor, preferably metofluthrin, from the cellulose-based substrate or matrix is reduced if the carrier solvent has an extremely high boiling point. For example, a carrier solvent having a boiling point in the range of about 285-317 ° C (for example Exxsol D140) has a lower release rate of active pyrethroid vapor in the atmosphere than carrier solvents having a point boiling in the range of about 150-265 ° C (for example Exxsol D40, Exxsol D80, Exxsol D100, Isopar G, Isopar M and Norpar 12). By "dry dosing" it is meant that the active pyrethroid vapor is applied to and present on the cellulose-based substrate or matrix in the presence of a volatile carrier solvent. Preferably, the active pyrethroid vapor, preferably metofluthrin, is dissolved in a volatile solvent that distributes the active pyrethroid vapor through the entire substrate with cellulosic base and then evaporates rapidly in the atmosphere. Preferably, the volatile solvent uniformly distributes the active pyrethroid vapor on the substrate or cellulose matrix and will effectively evaporate in 10 minutes of application on the substrate or matrix with cellulosic base. More preferably, the carrier solvent is characterized in that it has a relatively low boiling point and a high vaporization rate. Even more preferably, the volatile solvent has an evaporation rate in accordance with ASTM D3539-87 of more than 1.0. Preferably, the volatile solvent is selected from known solvents including but not limited to chlorinated hydrocarbons, methanol, ethanol, pentane, hexane, heptane, acetone and mixtures of these solvents such as ethanol / acetone (1: 1 by volume). In a preferred embodiment of the invention in which the dry dosage is employed, the active pyrethroid vapor, preferably metofluthrin, is dissolved in the volatile solvent and applied to the substrate, preferably a paper substrate, which will allow the solvent to evaporate at room temperature . It will be understood that solvent solvents used in both dry and wet applications of the active pyrethroid vapor to the substrate or cellulosic based matrix can be used in all aspects of the present invention that require a carrier solvent. The term "essential oils" will be understood to mean an aromatic and volatile liquid that is isolated by means of a physical process from an odoriferous vegetable of an individual botanical species. The oil has the name of the vegetable from which it was derived; for example rose oil or lavender oil. These essential oils obtained from vegetables can be extracted by distillation, steam distillation, expression and by extraction with fats or organic solvents. It will be understood that "chemical flavors" are natural or synthetic isolates that have an aroma. Natural isolates with mechanically removed (for example distillation) or chemically (for example hydrolysis or salt formation) from a natural essential oil. The isolates are additionally modified. For example rose and lavender oils can be distilled to produce linalool, which can then be acetylated to make linalyl acetate. Chemical flavors are the main constituents of essential oils. These constituents are generally monoterpenes and sesquiterpenes which include but are not limited to alcohols, aldehydes, ketones, esters, oxides and hydrocarbons. Preferably, natural chemical flavors or synthetically derived ones have a boiling point in the range of about 120-250 ° C. By "stable" insect control article according to the seventh and eighth aspects of the invention, it is meant that the active ingredient is stable in the cellulose-based substrate or matrix. More specifically, it will be understood that the insecticide product will continue to be satisfactory upon use after storage for at least two years according to the "Manual on Development and Use of FAO and HO Specification for Pesticides" (first edition, 2002). Preferably, the article for the control of insects packaged according to the fifth and sixth aspects of the invention are stable articles. In the third and fourth aspects of the invention, directed to an article for the control of flying insects, the substrate or matrix with cellulosic base is fixed to a protective material. In preferred embodiments of the first, second, fifth, sixth, seventh and eighth aspects of the invention, the substrate or matrix with cellulosic base can be fixed to a protective material. It will be understood that the meaning of the word "fixed" includes but is not limited to attached, attached, connected, appended or attached. Accordingly, it will be understood that the cellulose-based substrate or matrix can be fixed directly or indirectly to the protective material. In a preferred embodiment of the invention, the cellulosic matrix or substrate has one or two ends that are fixed to a board having a protective material on one side. It will be understood that the cellulose matrix or substrate can be fixed directly to the side of the board with the protective material, or fixed to the side of the board that does not have the protective material, being thus indirectly fixed to the protective material. By way of non-limiting example, it will be appreciated that the protective material can be "fixed" to the substrate or cellulosic matrix by means of water and solvent based adhesives, thermal fusion adhesives, staples, adhesive tapes and Velero fasteners. As discussed below, the cellulose based substrate or matrix of the invention may be in closed or open form. When the cellulosic based substrate or matrix is fixed to a protective material and is in the closed form, the protective material preferably covers the substrate or matrix with cellulosic base to minimize the emanation of active pyrethroid vapor into the environment. When the substrate or matrix with cellulosic base is encased in a packaging material as defined in the fifth, sixth, seventh and eighth aspects of the invention, the substrate or matrix with cellulosic base is preferably in the closed form. It will be appreciated that once the cellulose-based substrate or matrix is impregnated / dosed with the active pyrethroid vapor it may need to be stored for significant periods of time. Accordingly, it is important that the packing material or protective material be effective in minimizing the rate of release / emanation of the active pyrethroid vapor from the substrate or cellulose-based matrix in the atmosphere. This is most successfully achieved when the packing material or protective material is a material through which the vapor-active pyrethroid will not migrate and / or be absorbed. Preferably, the packaging / protective material used in the present invention is selected from but not limited to glass; metal sheets, preferably aluminum sheets, and laminates thereof; polyester, metallized polyester, thermally sealable polyester film, polyester-based and laminar-shaped film, such as amorphous PET and crystalline PET, and laminates thereof; and methyl acrylate-acrylonitrile copolymers and laminates thereof. It was found that when the cellulose-based substrate or matrix is wet-dosed, a larger range of packing material and protective material can be used than if the substrate or matrix with cellulosic base was dosed via dry. The present inventors surprisingly found that wet dosing of the cellulose-based substrate or matrix affects the movement of active pyrethroid vapor in the packaging and protective material. In particular, the inventors found that the movement of active pyrethroid vapor in some material, such as glass, sheet metal and laminates thereof; polyester, metallized polyester, thermally sealable polyester film, film and sheets formed with polyester base, such as amorphous PET and crystalline PET, and laminates thereof; and methyl acrylate-acrylonitrile copolymers and laminates thereof; It is reduced if wet dosing is used, preferably at dry dosing. Without adopting any theory, it is thought that in wet dosing, the active pyrethroid vapor has an affinity for the solvent and is less likely to migrate from the cellulose-based substrate or matrix. In contrast, it is thought that when dry-dosing is employed, the active pyrethroid vapor is absorbed by the substrate or matrix and results in migration of the active pyrethroid vapor into and through some materials. Preferably, the packaging / protective material used in the present invention when the dry route dosage is employed is selected from but is not limited to metal sheets, glass and crystalline PET. Preferably, the packaging / protective material used in the present invention when the dry route dosage is employed is selected from but not limited to glass; metal sheets, and laminates thereof; metallized polyester, thermally sealable polyester film, film and sheet formed of polyester, such as amorphous PET and crystalline PET, and laminates thereof; and copolymers of methyl acrylate-acrylonitrile, and laminates thereof. Even more preferably, the protective / packaging material used is laminated metal sheets. As indicated above, the rate of emanation of the active pyrethroid vapor from the cellulose-based substrate or matrix is affected by numerous parameters including surface area, mass and size of the paper, number of folds, etc. This in turn means that effective products when killing and / or repelling insects for different periods of time, such as 12 hours and 300 hours, would be different. The movement of air is required in order for the pyrethroid to emanate from the substrate into the atmosphere. The rate of emanation increases with the increasing air flow. A minimum air flow, such as the movement of bodies, a small fan in a closed room or windows and / or open doors, is sufficient to allow a minimum emanation rate of approximately 0.040 mg / h, and the preferred rate of emanation of approximately 0.075 mg / h. The cellulose-based substrate or matrix of the invention containing the active pyrethroid vapor can be bent between an open form and a closed form so that it is expandable and re-closable. This means that when insect control is not required, the cellulose-based substrate or matrix can be closed and stored in a way that minimizes the surface area that is exposed to the atmosphere. Conversely, when 1 insect control is required, the cellulose-based substrate or matrix can be expanded in an open manner thereby increasing the surface area of the substrate or cellulose-based matrix containing the pyrethroid that is exposed to the atmosphere allowing the pyrethroid to emanate in the atmosphere. It will be appreciated that various configurations of the substrate or matrix with cellulosic base can be adopted. These configurations include but are not limited to Japanese fans, arrangements of accordion type and three-dimensional structures having a plurality of cells such as beehive-like arrangements that open and close in an accordion form. A honeycomb-like arrangement can be hung to give a linear, open configuration on a table to provide a bridged configuration or closed in a circle to give a hanging lantern configuration. It will be appreciated that in forming the hanging circular lantern other configurations may be adopted before the circular shape. For example, the honeycomb arrangement can be placed in an arc of up to 360 °. Preferably the substrate or matrix with cellulosic base is in an arrangement, made of paper honeycomb. In a preferred embodiment of the invention, the cellulose-based substrate or matrix is arranged in the form of a honeycomb with two ends. Preferably, the two ends of the honeycomb arrangement are fixed to the protective material through which the active pyrethroid vapor can not migrate and / or be absorbed. More preferably, the two ends of the honeycomb arrangement are fixed to the sheet metal laminated board, even more preferably the cellulose based substrate or matrix which forms the honeycomb arrangement and impregnated and / or dosed with the steam active pyrethroid is fixed to the metallized side of the board using water-based glue. In a preferred embodiment of the invention, the cellulose-based substrate or matrix is a filler unit for a retention unit that is capable of supporting the cellulose-based substrate or matrix. For example, the retention unit containing the substrate or matrix with cellulosic base can be hung or deposited on a table. The tenth aspect of the invention is directed towards a method of packaging the cellulose-based substrate or matrix or the article for insect control according to the invention. It will be appreciated that the deforming, filling and sealing steps can be carried out in accordance with numerous known methods.

MODALITIES OF CARRYING OUT THE INVENTION In order to better understand the nature of the invention, numerous examples will be described. Paper Size and Surface Area: Paper Size and Surface Area (continued) B) Calculate the surface area: Example 1: Where the cellulose-based substrate or matrix is a sheet of flat A4 paper: The surface area of the flat A4 paper is the sum of the area of both sides of the paper and was calculated as follows: Surface = area of one side of the paper + area of the other side of the paper Surface Area = 625 cm2 + 625 cm2 Surface Area = 1250 cm2 Example 2: Where the substrate or matrix with cellulose base is a honeycomb configuration in accordance with the Figure 5. Figure 5 shows a cell of a honeycomb configuration. The surface area of the cell shown in Figure 5 is the sum of the area of the surfaces exposed to air. There are lines of glue between surfaces 1 and 2 and between surfaces 5 and 6 which means that each portion of paper that forms these surfaces has only one side exposed to air. The portions of paper that form the surfaces 3, 4, 7 and 8 have all, two sides exposed to air. Accordingly, the surface area for the cell shown in Figure 5 is calculated as follows: Surface Area (AS) m = (AS of surface 1) + (AS of surface 2) + (AS of surface 5) + (AS of surface 6) + (AS of surface 3) x 2 + (AS of surface 4) x 2 + (AS of surface 7) x 2 + (AS of surface 8) x 2 Surface Area = be + be + bd + 4 (ab) surface Area = 2 bd + 4ab C) Demolition Studies The inventors carried out numerous knockdown studies for the control of mosquitoes using paper surfaces impregnated and / or dosed with the insecticide metofluthrin active in steam. The active ingredient was applied to each of the paper surfaces as a solution in acetone / ethanol (1: 1). The tests were carried out in a 40 m3 test chamber. The temperature was about 28 ° C. Mixed sexed Aedes aegypti mosquitoes, 7-10 days old after emergence were used. Up to 200 mosquitoes were introduced into the chamber for each test. Three replications were made for each treatment. The knocked down mosquitoes were collected at the end of each evaluation period and counted. Example 3: Shooting studies against the Dengue Aedes aegypti mosquito were carried out using three surface areas a) A2, b) A3 and c) A4 of 18 gsm paper in the above test chamber. Each paper was treated with 150 mg of metofluthrin. A spiral for mosquitoes containing 0.04% Praletrin was included as a reference control. The results are shown in Figure 1. The results showed that after 10 minutes, an increase in surface area increases the product's results. After 20 minutes, all surface areas were equally effective. Additionally, it was shown that the three paper sizes when treated with metofluthrin are more effective than the control. Example 4: Shooting studies in the above test chamber against the Aedes egypti mosquito were carried out using five surface areas of paper of 18 gsm with five variable doses of metofluthrin a), 100 mg, b) A5, 50 mg , c) A6, 25 mg, d) A7, 12.5 mg, and e) A8, 6.25 mg. There was a common concentration of 800 mg / m2 for all paper samples. A spiral for mosquitoes containing 0.04% praletrin was included as a reference control. The treated paper was hung in the center of the anterior chamber. The results are shown in Figure 2. The results showed that an increase in surface area generally increases the results of the product. The inventors concluded that the result is dependent on the surface area. Example 5: A study of demolition against the Aedes egypti mosquito was conducted using aged paper. The test involved treating 18 gsm paper of A4 surface area with 2 mg of metofluthrin at 28 ° C for up to 12 hours. The treated paper was hung in the center of the test chamber. A spiral for mosquitoes containing 0.04% praletrin was included in the trial as a reference control. The results are shown in Figure 3.

The results showed that 2 mg of metofluthrin was required on the treated substrate to achieve more than 40% knockback for up to 4 hours. At 4 hours, the substrate of the present invention is twice as effective as the control. D) Studies that involve the Emanation Speed Example 6: A study was conducted involving the dosing of 50 gsm paper with different amounts of metofluthrin to investigate the effect of the emanation velocity from the substrate. Three paper samples (50 gsm) white (A4) each having a surface area of 1250 cm2 with metofluthrin (25, 20 and 14 mg) dissolved in acetone / ethanol (1: 1) using the dry-dosing technique. The papers were aged in a camera 28 ° C with air flow for up to a maximum of 214 hours. The amount of metofluthrin remaining on the paper substrate was measured from now at 0 hours to 214 hours. The graph obtained for the rate of emanation of metofluthrin from the samples dosed with 25 mg was used to estimate the time it would take for 20 and 14 mg of metofluthrin to remain on the samples. A combined graph of the data is shown in Figure 4.

The inventors concluded that by varying the initial amount in the range of 25 mg to about 5 mg, the rate of emanation is constant. The results also demonstrate that the linear release kinetics for metofluthrin emanating from paper substrates was observed. The combined graph facilitates the determination of an average release rate by adapting a line of better adaptation to the data so that the average speed of emanation is determined. Example 7: A study was carried out involving the dosing of 18 gsm paper configured in a honeycomb format with an estimated surface area of 2199 cm2 with metofluthrin (30 mg) to determine the rate of emanation from this substrate. Metofluthrin was dissolved in Norpar 12 and dosed on the substrate using the wet-dosing technique. The papers were hung and aged in a chamber at 28 ° C with low airflow for up to a maximum of 80 hours. The amount of metofluthrin remaining on the paper substrate was measured from time 0 to 60 hours. The graph obtained for the amount of metofluthrin remaining on the samples as a function of time was used to calculate the rate of release from this format. A graph of the data is shown in Figure 5. The inventors concluded that an emanation rate of 0.22 mg / hr (at 28 ° C) can be achieved from a honeycomb configuration of 18 gsm of estimated surface area of 2199 cm2. The results also demonstrate that linear release kinetics were observed for metofluthrin emanating from this format. Example 8: A study was made of the rate of emanation of metofluthrin from 30 gsm paper dosed with different solvents. Paper (30 gsm) white (A4) having a surface area of 1250 cm 3 was dosed with metofluthrin (14 mg) prepared in a range of solvents, which are listed below. The papers were aged in a chamber at 28 ° C with low. Air flow for up to 168 hours. The amount of metofluthrin remaining on the substrate paper was measured from time 0 to 168 hours. The following solvents were used: Table 1 summarizes the observed rates of emanation for each solvent. The inventors concluded that a linear release kinetics was observed for the metofluthrin emanating from the paper substrates and therefore, the line of best adaptation was adjusted to obtain the linear equation to facilitate the determination of the emanation rate.

Table 1 A = Boiling interval (° C) B = Evaporation rate * C = Polarity index ** * In relation to n-butyl acetate = 1 (ASTM D3539-87) ** In accordance with the polarity index of Snyder for solvents (LR Snyder, J. Chromatographic Science, 1978, 16, 223) (Reference compounds; i- octane = 0.1, n-decane = 0.4, n-hexane = 0.1). *** The rate of release rate was determined from the rate of release of metofluthrin observed from substrates dosed in a solvent relative to the rate of release for samples dosed with metofluthrin in acetone / ethanol (1: 1 by volume). The results indicate that papers dosed with metofluthrin in solvents with boiling ranges of 155 - 245 ° C showed an increase in the release rate compared to the acetone / ethanol control. Additionally, solvents of extremely high boiling points such as Exxsol D140 caused a drastic reduction in the rate of release. In these samples the solvent did not evaporate completely during the study. In addition, it was observed that solvents with boiling ranges of 155 - 245 ° C and relatively low polarity indices showed an increasing rate of release compared to the sample dosed with acetone / ethanol (1: 1) which had a polarity index comparatively high Example 9: A study was made of the rate of emanation of metofluthrin from 18 gsm paper dosed with different solvents. Silk tissue (18 gsm) having an effective surface area of 1250 cm 2 (A4) was dosed with metofluthrin (14 mg) prepared in a range of solvents. The papers were then aged in a chamber at 28 ° C with low airflow for up to 168 hours. The amount of metofluthrin remaining on the paper substrate was measured from time 0 to 168 hours. The following solvents were used: Table 2 illustrates the observed rates of emanation for each solvent. The inventors concluded that linear release kinetics were observed for the metofluthrin emanating from the paper substrates and therefore, the line of best adaptation was adjusted to obtain the linear equation to facilitate the determination of the emanation rate. Table 2: A = Boiling interval (° C) B = Evaporation rate * C = Polarity index ** * In relation to n-butyl acetate = 1 (ASTM D3539-87) ** In accordance with the polarity index of Snyder for solvents (Reference compounds, i-octane = 0.1, n-decane = 0.4, n-hexane = 0.1, glycols> 2). *** The rate of release rate was determined from the release rate of metofluthrin observed from substrates dosed in a solvent in relation to the rate of release for samples dosed with metofluthrin (in acetone / ethanol (1: 1)). The results indicate that papers dosed with metofluthrin in solvents with boiling ranges from 188-243 ° C showed an increase in release rate compared to the acetone / ethanol control. In addition, it was observed that samples dosed with solvents having low polarity indices showed significantly increased release rates compared to the sample dosed with acetone / ethanol (1: 1) which had a comparatively high polarity index. The results showed that the increase in the release rate can be a result of a combination of the two parameters, volatility and polarity. The results for n-pentane and Dowanol indicate that the polarity of the solvent has a stronger influence on the rate of release than volatility. Example 10: The stability and adequacy of the packaging of various materials was studied. In these studies, metofluthrin (14 ng) was applied to paper substrates of 30 gsm A4 size by wet application and dry route at room temperature. The samples were placed in bags prepared from the packaging materials under investigation, sealed and stored at 55 ° C. After periods of one to two weeks, the samples were removed from storage and the content of metofluthrin was determined on the dosed paper substrates. The packaging materials studied were glass, PVC, amorphous PET, (APET), crystalline PET (CPET), aluminum foil, thermally sealable polyester films, methyl acrylate-acrylonitrile copolymers and PEPET. For wet dosing of metofluthrin on the paper substrate, metofluthrin was dissolved in Exxsol D80 or Norpar 12 and the resulting solution was applied to the substrate. For dry application, metofluthrin was dissolved in acetone / ethanol (1: 1 by volume) and applied to the substrate. Then, the solvent was allowed to evaporate for a period of 5-10 minutes. The following data summarize the results obtained: Note 1: The glass bottle included a PET operculum. The operculum was attributed to the loss of metofluthrin observed in the stability experiment when the dry route dosing method was used. so that the active pyrethroid vapor is emitted into the environment with no air movement at a rate of at least about 0.040 mg / hr at a temperature in the range of about 18-40 ° C. 2. The cellulose-based substrate or matrix according to claim 1, characterized in that the solvent is selected from the group consisting of normal paraffins with a boiling point range of about 155-276 ° C, dearomatized aliphatic hydrocarbons and their mixtures in the boiling range of about 150-265 ° C, isoparaffins in the boiling range of about 150-300 ° C and glycol ethers in the boiling range of about 120-243 ° C. 3. The cellulose-based substrate or matrix according to claim 1 or 2, characterized in that the carrier solvent has a boiling point in the range of about 150-265 ° C. 4. A substrate or matrix with a cellulose base to control flying insects, the substrate or matrix with a cellulose base impregnated and / or dosed with an insecticidally effective amount of a

Claims

Note 2: It will be recognized that an acceptable level of uncertainty for these measurements would be ± 5%. A = Wet dosage, Solvent; a = Exxol D80; b = Normar 12; B = Dry route dosing, Solvent; c = acetone / ethanol (1: 1); C = metofluthrin recovered from the paper substrate (%); D = metofluthrin recovered from the paper substrate (%); E = 1 week at 55 ° C; F = 2 weeks at 55 ° C; G = 1 week at 55 ° C; H = 2 weeks at 55 ° C The results indicate that packing the wet product limits the movement of the active ingredient in the package. In addition, APET, CPET, glass, thermally sealable polyester film, methyl acrylonitrile-acrylonitrile copolymers and aluminum foil all appeared to be suitable packaging for the packaged wet product. If the product is to be dry-packed then CPET and aluminum foil appeared to be the best packaging options. Those skilled in the art will appreciate that numerous variations and / or modifications to the invention can be made as shown in the specific embodiments without departing from the spirit or scope of the invention as broadly described. The modalities of the present are, therefore, to be considered in all aspects as illustrative and not limiting. NOVELTY OF THE INVENTION Having described the present invention, it is considered as a novelty, and therefore the content of the following is claimed as property: CLAIMS 1. A cellulose-based substrate or matrix for controlling flying insects, the substrate or matrix with cellulosic base impregnated and / or dosed with an active pyrethroid vapor in a carrier solvent, characterized in that the substrate or matrix with cellulosic base has a surface area in the cellulose. 50 - 5000 cm2 range, the active pyrethroid vapor is selected from the group consisting of metofluthrin, transfluthrin, empenthrin, methotrine, tefluthrin, and fenfluthrin or mixtures thereof and is present in an amount of about 2.0 - 3000 mg / m2 , and the carrier solvent has an evaporation rate in accordance with ASTM D3539-87 of less than about 1.0, a boiling point in the range of about 120-330 ° C and a polarity index of Snyder in the range of about 0.0 - 4.0; active pyrethroid in a carrier solvent, characterized in that the active pyrethroid vapor is selected from the group consisting of metofluthrin, transfluthrin, empenthrin, methothine, tefluthrin, and fenfluthrin or mixtures thereof and the carrier solvent has an evaporation rate in accordance with ASTM D3539-87 of less than about 1.0, a boiling point in the range of about 120-330 ° C and a polarity index in the range of about 0.0-4.0, so that the active pyrethroid vapor is emitted into the environment at a rate of at least about 0.040 mg / h. 5. The cellulose-based substrate or matrix according to claim 4, characterized in that the active pyrethroid vapor is metofluthrin. The cellulose-based substrate or matrix according to any one of claims 1 - 5, characterized in that the substrate or matrix with a cellulose base is impregnated and / or dosed with an active pyrethroid vapor in an amount of approximately 16-320 mg / m2 of the surface area of the substrate or matrix. The cellulose-based substrate or matrix according to claim 6, characterized in that the active pyrethroid vapor is in an amount of about 130-320 mg / m2. 8. The cellulose-based substrate or matrix according to any one of claims 1 - 5 characterized in that the substrate or matrix with cellulosic base is impregnated and / or dosed with an active pyrethroid vapor in an amount of approximately 48-960 mg / m2 of the surface area of the substrate or matrix. 9. The cellulose-based substrate or matrix according to claim 8, characterized in that the active pyrethroid vapor is in an amount of approximately 390-960 mg / m2. 10. The cellulose-based substrate or matrix according to any one of claims 1 - 5, characterized in that the substrate or matrix with cellulosic base is impregnated and / or dosed with an active pyrethroid vapor in an amount of approximately 144. - 2880 mg / m2 of the surface area of the substrate or matrix. 11. The substrate or matrix with cellulosic base according to claim 10, characterized in that the active pyrethroid vapor is in an amount of approximately 1170-2880 mg / m2. 12. The cellulose-based substrate or matrix according to any one of claims 1-11, characterized in that the active pyrethroid vapor is emitted into the environment at a temperature in the range of about 21-40 ° C. 13. The cellulose-based substrate or matrix according to any one of claims 1 to 12, characterized in that the active pyrethroid vapor is emitted into the environment at a rate of at least about 0.075 mg / h. The cellulose-based substrate or matrix according to any one of claims 1-13, characterized in that the active pyrethroid vapor is emitted into the environment at a rate of at least about 0.075 mg / h at a temperature of about 21. -35 ° C. 15. The cellulose-based substrate or matrix according to any one of claims 1 to 14, characterized in that the cellulose-based substrate or matrix has a grammage in the range of about 12 gsm to less than 260 gsm. 16. The substrate or matrix with cellulosic base according to claim 15, characterized in that the substrate or matrix with cellulosic base has a grammage of approximately 18 gsm to 40 gsm. 17. The cellulose-based substrate or matrix according to any one of claims 1 to 16, characterized in that the cellulose-based substrate or matrix is a paper substrate having a grammage of approximately 18 gsm. 18. The cellulose-based substrate or matrix according to any one of claims 1 to 17, characterized in that the substrate or matrix with cellulosic base is in the form of a honeycomb arrangement. The cellulose-based substrate or matrix according to claim 18, characterized in that the honeycomb arrangement has two ends that are fixed to a protective material in which the active pyrethroid vapor can not migrate and / or be absorbed. . 20. The substrate or matrix with cellulosic base according to claim 19, characterized in that the honeycomb arrangement has an open shape that allows the emanation of active pyrethroid vapor in the atmosphere and a closed form that inhibits migration and / or absorption of active pyrethroid vapor in the atmosphere. 21. The cellulose-based substrate or matrix according to any one of claims 1 - 20 characterized in that the flying insects are controlled by knockdown. 22. The cellulose-based substrate or matrix according to any one of claims 1-21, characterized in that the flying insects are mosquitoes. 23. An article for the control of flying insects characterized in that it comprises: a) a cellulose-based substrate or matrix with a surface area in the range of 50-5000 cm2 impregnated and / or dosed with an active pyrethroid vapor solution in a amount of approximately 2.0 - 3000 mg / m2 in a carrier solvent, wherein the active pyrethroid vapor is selected from the group consisting of metofluthrin, transfluthrin, empenthrin, methotrine, tefluthrin, and fenfluthrin or mixtures thereof and the carrier solvent has an evaporation rate in accordance with ASTM D3539-87 of less than about 1.0, a boiling point in the range of about 120-330 ° C and a polarity index of Snyder in the range of about 0.0-4.0; the substrate or matrix with cellulosic base impregnated and / or dosed with the active pyrethroid vapor in an amount such that the active pyrethroid vapor is emitted into the environment with air movement without increase at a rate of at least about 0.040 mg / ha a temperature in the range of about 18 -40 ° C; and b) a protective material that is fixed to the cellulose-based substrate or matrix, in said protective material the active pyrethroid vapor does not migrate and / or is not absorbed; wherein the substrate and / or matrix with cellulosic base exists in an open and closed manner such that when in the open form the pyrethroid is capable of emanating from the substrate to the environment and when it is in the closed form the protective material covers the substrate or matrix to minimize the emanation of the pyrethroid to the environment. 24. The article for controlling insects according to claim 23, characterized in that the solvent is selected from the group consisting of normal paraffins with a boiling point range of about 155-276 ° C, dearomatized aliphatic hydrocarbons and mixtures thereof. the boiling range of about 150-265 ° C, isoparaffins in the boiling range of about 150-300 ° C and glycol ethers in the boiling point range of about 120-243 ° C. 25. The article for insect control according to claim 23 or 24, characterized in that the carrier solvent has a boiling point in the range of about 150-265 ° C. 26. An article for the control of flying insects characterized in that it comprises: a) a substrate or matrix with a cellulose base to control flying insects, the substrate or matrix with a cellulose base impregnated and / or dosed with an insecticidally effective amount of a pyrethroid vapor active in a carrier solvent, wherein the active pyrethroid vapor is selected from the group consisting of metofluthrin, transfluthrin, empenthrin, methotrine, tefluthrin, and fenfluthrin or mixtures thereof and the carrier solvent has an evaporation rate in accordance with ASTM D3539-87 of less than about 1.0, a boiling point in the range of about 120 - 330 ° C and a polarity index in the range of about 0.0 - 4.0 so that the active pyrethroid vapor is emitted into the environment at a speed of at least about 0.040 mg / h; and b) a protective material that is fixed to the cellulose-based substrate or matrix, in said protective material the active pyrethroid vapor does not migrate and / or is not absorbed; wherein the substrate and / or matrix with cellulosic base exists in an open and closed manner so that when it is in the open form the pyrethroid is able to emanate from the substrate to the environment and when it is in the closed form the protective material covers the substrate or matrix to minimize the emanation of the pyrethroid to the environment. 27. The article for the control of insects according to claim 26, characterized in that the vapor of the active pyrethroid is metofluthrin. 28. The article for the control of insects according to claim 26 or 27, characterized in that the substrate or matrix with cellulosic base is in the form of a honeycomb distribution. 29. The article for controlling insects according to claim 28, characterized in that the honeycomb distribution has two ends that are fixed to the protective material. 30. An article for the control of flying insects characterized in that it comprises: a) a substrate or matrix with a cellulosic base with a surface area in the range of 50 - 5000 cm2 impregnated and / or dosed with an active pyrethroid vapor solution in an amount of about 2.0-3000 mg / m2 in a carrier solvent, wherein the active pyrethroid vapor is selected from the group consisting of metofluthrin, transfluthrin, empenthrin, methotrine, tefluthrin, and fenfluthrin or mixtures thereof and the carrier solvent has an evaporation rate in accordance with ASTM D3539-87 of less than about 1.0, a boiling point in the range of about 120-330 ° C and a polarity index of Snyder in the range of about 0.0-4.0; the substrate or matrix with cellulosic base impregnated and / or dosed with the active pyrethroid vapor in an amount such that the active pyrethroid vapor is emitted into the environment without increase at a rate of at least about 0.040 mg / h at a temperature in the range of approximately 18-40 ° C; and b) a packaging material enclosing the substrate and / or matrix with cellulosic base, in said material the active pyrethroid vapor does not migrate and / or is not absorbed; wherein when the packaging material enclosing the substrate and / or matrix with cellulosic base is removed from the environment substrate or matrix with cellulosic base the active pyrethroid vapor is free to emanate from the substrate or matrix with cellulosic base exposed to the environment to control flying insects. 31. The insect control device according to claim 30 characterized in that the solvent is selected from the group consisting of normal paraffins with a boiling point in the range of about 155-276 ° C, de-aromatized aliphatic hydrocarbons and their mixtures in the range of boiling point of about 150-265 ° C, isoparaffins in the boiling range of about 150-300 ° C and glycol ethers in the boiling point range of about 120-243 ° C. 32. The article for the control of packaged flying insects according to claim 30 or 31 characterized in that the carrier solvent has an evaporation rate in accordance with ASTM D3539-87 of less than about 1.0, a boiling point in the range of approximately 150-265 ° C. 33. An article for the control of packaged flying insects characterized in that it comprises: a) a substrate or matrix with a cellulose base to control flying insects, the substrate or matrix with a cellulose base impregnated and / or dosed with an insecticidally effective amount of a vapor of active pyrethroid in a carrier solvent, wherein the active pyrethroid vapor is selected from the group consisting of metofluthrin, transfluthrin, empenthrin, methothine, tefluthrin, and fenfluthrin or mixtures thereof and the carrier solvent has an evaporation rate in accordance with ASTM D3539-87 of less than about 1.0, a boiling point in the range of about 120-330 ° C and a polarity index in the range of about 0.0-4.0 so that the active pyrethroid vapor is emitted into the environment at a speed of at least about 0.040 mg / h; Y; b) a packing material enclosing the substrate or matrix with cellulose base, in said material the active pyrethroid vapor does not migrate and / or is not absorbed; wherein when the packing material enclosing the substrate or matrix with cellulosic base is removed from around the substrate or matrix with cellulosic base, the active pyrethroid vapor is free to emanate from the substrate or matrix with cellulose base exposed to the environment to the control of flying insects. 34. The device for controlling insects according to claim 33, characterized in that the active pyrethroid vapor is metofluthrin. 35. An article for the control of stable flying insects characterized in that it comprises: a substrate or matrix with cellulosic base with a surface area in the range of 50 - 5000 cm2 moistened with an active pyrethroid vapor solution in an amount of approximately 2.0 - 3000 mg / m2 of the surface area and a carrier solvent, enclosed in the packaging material; wherein the active pyrethroid vapor is selected from the group consisting of metofluthrin, transfluthrin, empenthrin, methotrine, tefluthrin, and fenfluthrin or mixtures thereof and the carrier solvent has an evaporation rate in accordance with ASTM D3539-87 of less than about 1.0, a boiling point in the range of about 120-330 ° C and a polarity index of Snyder in the range of about 0.0-4.0; so that the active pyrethroid vapor emanates from the cellulose substrate or matrix into the environment without increase at a rate of at least about 0.040 mg / h at a temperature in the range of about 18-40 ° C but does not migrate and / or is not absorbed in the packaging material. 36. The article for insect control according to any one of the claims 41-42 characterized in that the solvent is selected from the group consisting of normal paraffins with a boiling point range of about 155-276 ° C, dearomatized aliphatic hydrocarbons and their mixtures in the boiling point range of about 150-265 °. C, isoparaffins in the boiling range of about 150-300 ° C and glycol ethers in the boiling range of about 120-243 ° C. 37. The article for stable flying insect control according to claim 35 or 36, characterized in that the carrier solvent has a boiling point in the range of about 150-265 ° C. 38. An article for the control of stable flying insects characterized in that it comprises: a substrate or matrix with cellulosic base moistened with a solution of an insecticidally effective amount of an active pyrethroid vapor selected from the group consisting of metofluthrin, transfluthrin, empenthrin, methotrine , tefluthrin, and fenfluthrin or mixtures thereof and a carrier solvent has an evaporation rate in accordance with ASTM D3539-87 of less than about 1.0, a boiling point in the range of about 120-330 ° C and an index of polarity in the range of about 0.0 - 4.0 enclosed by a packing material; wherein the active pyrethroid vapor emanates from the cellulose-based substrate or matrix into the environment at a rate of at least about 0.040 mg / hr but does not migrate and / or is not absorbed into the packaging material. 39. The article for insect control according to claim 38, characterized in that the active pyrethroid vapor is metofluthrin. 40. The article for insect control according to any one of claims 23 to 39, characterized in that the active pyrethroid vapor is emitted into the atmosphere at a rate of at least about 0.075 mg / h at a temperature in the range of approximately 21 - 35 ° C. 41. The article for the control of insects according to any of claims 23 to 40 characterized in that the substrate or matrix with cellulosic base has a grammage in the range of about 12 gsm to less than 260 gsm. 42. The article for the control of insects according to any one of claims 23 to 41, characterized in that the substrate or matrix with cellulosic base is a paper substrate with a grammage of approximately 18 gsm. 43. The device for the control of insects packaged or the article for the control of insects according to any one of claims 30 to 39, characterized in that the substrate or matrix with cellulosic base is in the form of a honeycomb arrangement of paper. 44. The device for controlling insects according to claim 43, characterized in that the honeycomb arrangement has two ends that are fixed to the material through which the active pyrethroid vapor can not migrate. 45. The device for controlling insects according to claim 44, characterized in that the honeycomb arrangement has an open shape that allows the emanation of the active pyrethroid vapor in the atmosphere and a closed form that inhibits the migration of the vapor of pyrethroid active in the atmosphere. 46. The article for controlling insects according to any one of claims 23 to 45, characterized in that the protective material and the packaging material are selected from the group including metallized polyester, thermally sealed polyester films, formed sheets and film with a base of polyester and copolymers of methyl acrylate-acrylonitrile and laminates thereof. 47. The article for the control of insects according to any one of claims 23 to 45, characterized in that the protective material and the packaging material are sheets of metal and laminates thereof. 48. The article for insect control according to any one of claims 23 to 45, characterized in that the protective material and the packaging material is glass. 49. An article for the control of flying insects characterized in that it comprises: a) a substrate or matrix with a cellulosic base with a surface area in the range of 50 - 5000 cm2 impregnated and / or dosed with an active pyrethroid vapor solution in a amount of approximately 2.0 - 3000 mg / m2 in a carrier solvent, the substrate or matrix with a cellulose base impregnated and / or dosed with the active pyrethroid vapor in an amount such that the active pyrethroid vapor is emitted in an environment with air movement without increase at a rate of at least about 0.040 mg / h at a temperature in the range of about 18-40 ° C; and b) a protective material that is fixed to the cellulose-based substrate or matrix in said protective material the active pyrethroid vapor does not migrate and / or is not absorbed; wherein the protective material and the packaging material are selected from the group including metallized polyester, thermally sealed polyester films, film and sheets formed of polyester and methyl acrylate-acrylonitrile copolymers and laminates thereof; metal sheets and laminates thereof; and glass; and the cellulose-based substrate and / or matrix exists in a closed and open manner so that when in open form the pyrethroid is capable of emanating from the substrate into the environment and when in the closed form the protective material covers the substrate or matrix to minimize the emanation of pyrethroid in the environment. 50. An article for the control of flying insects, characterized in that it comprises: a) a cellulose-based substrate or matrix for controlling flying insects, the substrate or matrix with a cellulose base impregnated and / or dosed with an insecticidally effective amount of a water vapor. active pyrethroid in a carrier solvent, wherein the carrier solvent has an evaporation rate in accordance with ASTM D3539-87 of less than about 1.0, a boiling point in the range of about 120-330 ° C and a polarity index in the range of about 0.0-4.0 so that the active pyrethroid vapor is emitted into the environment at a rate of at least about 0.040 mg / h; and b) a protective material that is fixed to the cellulose-based substrate or matrix in said protective material the active pyrethroid vapor does not migrate and / or is not absorbed; wherein the protective material and the packaging material are selected from the group including metallized polyester, thermally sealed polyester films, film and sheets formed of polyester and methyl acrylate-acrylonitrile copolymers and laminates thereof; metal sheets and laminates thereof; and glass; and the substrate and / or matrix with cellulosic base exists in a closed and open form so that when in the open form the pyrethroid is capable of emanating from the substrate into the environment and when it is in the closed form the protective material covers the substrate or matrix to minimize the emanation of pyrethroid in the environment. 51. An article for the control of packaged insects characterized in that it comprises: a) a substrate or matrix with a cellulosic base with a surface area in the range of 50 - 5000 cm2 impregnated and / or dosed with an active pyrethroid vapor solution in an amount from about 2.0-3,000 mg / m2 in a carrier solvent, the substrate or matrix with cellulosic base impregnated and / or dosed with the active pyrethroid vapor in an amount such that the active pyrethroid vapor is emanated in an environment not increased to a speed of at least about 0.040 mg / h at a temperature in the range of about 18-40 ° C; and b) a packaging material enclosing the cellulose-based substrate or matrix in said material the active pyrethroid vapor does not migrate and / or is not absorbed; wherein the protective material and the packaging material are selected from the group including metallized polyester, thermally sealed polyester films, film and sheets formed of polyester and methyl acrylate-acrylonitrile copolymers and laminates thereof; sheets of metal and laminates thereof; and glass; and so that when the packing material enclosing the substrate or matrix with cellulosic base is removed from around the substrate or matrix with cellulosic base, the active pyrethroid vapor is free to emanate from the cellulose-based substrate or matrix exposed to the environment to control flying insects. 52. An article for the control of packaged flying insects, characterized in that it comprises: a) a substrate or matrix with a cellulose base to control flying insects, the substrate or matrix with a cellulose base impregnated and / or dosed with an insecticidally effective amount of a vapor of active pyrethroid in a carrier solvent, of mucus that the active pyrethroid vapor is emanated in the environment at a rate of at least about 0.040 mg / h; and b) a packaging material enclosing the cellulose-based substrate or matrix in said material the active pyrethroid vapor does not migrate and is not absorbed; wherein the protective material and the packaging material is selected from the group including metallized polyester, thermally sealed polyester films, film and sheets formed of polyester and methyl acrylate-acrylonitrile copolymers and laminates thereof; metal sheets and laminates thereof; and glass; and so that when the packing material enclosing the substrate or cellulosic base matrix is removed from around the substrate or cellulosic matrix, the active pyrethroid vapor is free to emanate from the substrate or matrix with cellulosic base exposed in the environment for the control of flying insects. 53. An article for the control of flying insects characterized in that it comprises: a substrate or matrix with a cellulose base with a surface area in the range of 50 - 5000 cm2, was moistened with an active pyrethroid vapor solution in an amount of approximately 2.0 - 3000 mg / m2 of the surface area and a carrier solvent, enclosed in a packing material; wherein the protective material and the packaging material are selected from the group including metallized polyester, thermally sealed polyester films, formed sheets and films with a polyester base and copolymers of methyl acrylate-acrylonitrile and laminates thereof; metal sheets and laminates thereof; and glass; and so that the active pyrethroid vapor emanates from the cellulosic substrate or matrix in an environment not increased at a rate of at least about 0.040 mg / h at a temperature in the range of about 18-40 ° C but does not migrate and / or is not absorbed in the packaging material. 54. An article for the control of stable flying insects characterized in that it comprises: a substrate or matrix with cellulosic base moistened with a solution of an insecticidally effective amount of an active pyrethroid vapor and a carrier solvent having an evaporation rate in accordance with ASTM D3539-87 of less than about 1.0, a boiling point in the range of about 120-330 ° C and a polarity index in the range of about 0.0-4.0, enclosed in a packing material; wherein the protective material and the packaging material are selected from the group including metallized polyester, thermally sealed polyester films, formed sheets and films with a polyester base and copolymers of methyl acrylate-acrylonitrile and laminates thereof; metal sheets and laminates thereof; and glass; and so that the active pyrethroid vapor emanates from the cellulosic substrate or matrix in an environment not increased at a rate of at least about 0.040 mg / hr but does not migrate and / or is not absorbed into the packaging material. 55. A method for controlling flying insects, characterized in that it comprises the steps of: a) providing the cellulose-based substrate or matrix or article for controlling insects according to any one of claims 1 to 54; b) exposing the cellulose-based substrate or matrix in an environment with no air movement; and c) allowing the active pyrethroid vapor impregnated in and / or dosed onto the cellulosic substrate or matrix to emanate passively in the air. 56. The article for the control of flying insects of any of claims 23-54 and the method according to claim 55, characterized in that the active pyrethroid vapor emanates in an atmosphere to knock down flying insects. 57. The article for the control of insects according to any of claims 23 -54 and the method according to claim 55, characterized in that the flying insects are mosquitoes. 58. A method of packaging a cellulose-based substrate or matrix for insect control according to any one of claims 1 to 54, characterized in that it comprises the steps of: providing a packing material through which the vapor of active pyrethroid does not migrate and / or is not absorbed; form a bag with the packaging material; filling the bag with the substrate or matrix with cellulose base or article for the control of insects; and seal the bag. 59. The method according to claim 58, characterized in that the packaging material is selected from the group consisting of metallized polyester, thermally sealed polyester films, formed sheets and films with polyester base and copolymers of methyl acrylate-acrylonitrile and laminates. thereof; metal sheets and laminates thereof; and glass.