There are more than 3,000 species of mosquitoes that bite people, suck blood, and spread diseases. Humans have used various methods to eliminate mosquitoes, but they are still rampant.

With the development of science, a modern ultrasonic weapon to subdue mosquitoes, the bionic mosquito repellent, was successfully developed in Germany. Many countries also use ultrasonic waves to repel and kill mosquitoes. Canada has established a mosquito repellent radio station in Montreal, which continuously transmits mosquito repellent signals. South Korea has produced an ultrasonic mosquito repellent that not only repels mosquitoes, but also damages the nervous system of mosquitoes. Some countries use ultrasonic waves to increase music signals and successfully develop artificial male mosquito music repellents. In our country, we have recently developed a comprehensive new weapon that can repel mosquitoes, cockroaches, and mice, which far exceeds the effectiveness of foreign single-machine mosquito repellents.

This new ultrasonic mosquito-killing weapon does not require pesticides and only uses a small battery. It is packed in a box the size of a matchbox and can be placed indoors, outdoors, or in a pocket. When used, as long as the power is turned on, it will emit ultrasonic waves of various frequencies, such as the ultrasonic waves of male mosquitoes and bats catching mosquitoes; the ultrasonic waves that drive away cockroaches, mice and damage their nervous and reproductive systems, and continuously emit in the form of scanning. It makes mosquitoes, cockroaches and mice die and escape.

Why can ultrasonic waves eliminate mosquitoes? It turns out that it takes advantage of the mystery of mosquito habits. Male mosquitoes do not suck blood and bite humans, but female mosquitoes must bite and suck blood after mating with male mosquitoes in order to have children. When female mosquitoes bite people and suck blood, they inject an anesthetic at the same time so that people cannot feel it.

Not only do male mosquitoes not bite people, but they can also play a role in driving away female mosquitoes that suck blood and bite people. When mosquitoes engage in group dance mating activities, male mosquitoes emit buzzing courtship calls to attract female mosquitoes. After the male mosquito and the female mosquito mate, the female mosquito immediately runs away and is very afraid of the male mosquito's cry. The first mosquito repellent was built based on this principle. Canada's mosquito repellent radio stations and all bionic ultrasonic mosquito repellents emit the sounds of male mosquitoes seeking mates, and some also add ultrasonic waves that damage the mosquito's body mechanism.