The rats' auditory systems are very developed, they are very sensitive to ultrasonic waves and can determine the source of sound in the dark. Young rats can emit 30-50 kHz ultrasound when they are threatened, and they can return to the nest by ultrasonic waves and echoes when their eyes are closed. Adult rats can send out an ultrasound call in case of a crisis, and they can also send out an ultrasound to express happiness when mating. It can be said that ultrasound is a rat language. Rats have a strong hearing and weak vision (a mouse can see only an inch.). For everyday sounds, they will bear it with equanimity, but for the sound of the accident, they will be shocked and evaded or unable to move.
The ultrasonic waves generated by ultrasonic battery operated mouse traps
can make rats and most pests irritating, and the sound waves will directly affect their brain and make them uncomfortable. The rats will have symptoms such as loss of appetite, anorexia, convulsions, and even indirectly death, and they can't wait to escape from the scene immediately; But because rats have residential property, they won’t move easily, but will come back to see if it’s really not suitable for a long-term residence. Therefore, the ultrasonic battery operated mouse traps must be used for at least ten days to half a month to achieve the purpose of driving away the rats for a long time.