Types and working principle of mosquito repellent

We produce Indoor Electric Ultrasonic Pest Repeller.There are two types of mosquito repellents, one is electromagnetic wave, and the other is ultrasonic. The former should be said that electromagnetic waves that are harmless to humans can affect the nervous systems of insects, mice and other animals, causing them to escape or even die suddenly. The latter is based on the fact that some animals can receive higher frequency ultrasound than humans, and use ultrasound that cannot be heard by human ears to repel insects and other animals.Indoor Electric Ultrasonic Pest Repeller is your good choice.