Rodent Repellent System
Rodent Repellers are high frequency signal generators. These signals are fed to the transducers which in turn convert them into high frequency sound waves (well above the 20 Khz frequency which is the upper limit of the hearing range of humans). The transducers emit intensive sound waves at high decibels (sound pressure) that are audible and painful to rodents but are inaudible and harmless to humans. The rodents usually leave the area being protected by the ultrasound waves immediately and at other times it may take as long as 4 to 6 weeks before there is significant reduction in rodent infestation. They do not get killed. The transducers are quiet. If you cannot hear them, do not think that the unit is not working. You cannot hear ultrasound. The powerful sound waves generated by the transducers of the repellers are within the hearing range of many pests, and cause them pain and discomfort. Sometimes, the pests will leave the area being protected immediately, and at times it will take as long as four to six weeks before there is a significant reduction in infestation.
Rodents stop entering the areas being protected by Ultrasonic Pest Repeller, because the ultrasonic sound waves hit their eardrums and cause them considerable pain and discomfort. They do not get immune since the sound output is at varying frequencies. They do not die unless they get trapped in a particular place for days together or are under consistent exposure to ultrasonic sound.