Львівська державна академія ветеринарної медицини ім. С.З. Гжицького
Львовская Государственная Академия Ветеринарной Медицины Им. С.З. Гжицкого
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A method of deterring injurious rodents includes using frequency-modulated signals transformed into acoustic ones. Chaotic irradiation of three signals is used, with the spectrum of the first signal comprising frequencies from 4 to 16 kHz, of the second one from 16 to 31.5 kHz, of the third one the acoustic signals, which imitate voices of biological enemies of the rodents. The proposed method provides high effectiveness while deterring injurious rodents on the territories, already populated, and prevents from appearing thereof on any objects. The acoustic signals changing in the time according to the frequency and intensity make it possible to avoid the effect of adaptation to the certain permanent discomfort and "danger signals".
UA2000126934A2000-12-042000-12-04Method of deterring injurious rodents
UA40316A
(en)