Why can I hear the PestChaser?
Ultrasonic sound is a frequency too high to be heard by the human ear (your eardrum can’t vibrate fast enough). People can hear sounds ranging from 20 to 20,000 cycles per second, while dogs and cats can hear up to 27,000 cycles per second. The range of other animals can be even higher. When measured electronically, these frequencies are expressed in “hertz”, defined as a unit equal to one cycle per second. Ultrasonic sound waves are frequencies over 20,000 hertz, or 20 kilohertz (kHz). The PestChaser is designed to continually and automatically sweep an ultrasonic frequency range between 32 and 62 kHz, well above the hearing range of humans and common pets (cats, dogs, birds, fish). Rodents and some other pests can clearly hear these frequencies. At high intensity the sound can induce auditory stress.
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- Why can I hear the PestChaser?
