Does ultrasonic really repel pests?
Animals like rats and bats use ultrasound carry on communicating. The rodent auditory system is developed on the ultrasound, it is very sensitive to sounds in the dark to check the source, their pups when threatened may send out 30,000Hz to 50,000Hz, ultrasound. When the eyes are not opened they can rely on ultrasound echo to return to the nest. The adult mouse in the face of crisis sends out an ultrasonic sound to call for help. When mating also it sends out an ultrasound to express happiness. We can therefore say that an ultrasonic sound is a class of rodent language.
Therefore if you can use a powerful high-power ultrasound pulses to the rodent auditory system interference and to stimulate effectively, it could not bear to feel panic and anxiety, and the emergence of symptoms such as convulsions or loss of appetite, you can achieve the purpose of driving them out.
Flies like cockroach, mosquito and so on, although no documentary evidence, can be driven away by ultrasound, but a discovery shows that high power ultrasound pulse on the a moderating effect of harmful pests, because the sound is disseminated using air vibrations on which cockroaches, mosquitoes and other insects fly, so the strength of the acoustic pulse will make them feel uncomfortable to fly.
Rarely fly for longer distances when their activities are interfered by ultrasound and then their behavior become blunt and their life span become shorter than one week. As long as ultrasound is continuously used and stationed in the house, the breeding of mosquitoes will be completed destroyed and there will be no harmful effect of mosquitoes.
The life span of flies generally is 1 to 2 months, and within this time they can fly 6
The continuous use of ultrasound for a long term will have a good inhibitory effect on other insects such as ants and spiders.
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