Mosquito Repeller / Insect and Bug Repeller Electronic Kit
The theory behind this circuit is quite simple and amazingly effective. When female mosquitoes (the ones that bite you) are pregnant they prefer to stay away from male mosquitoes and search for food (your blood). The circuit reproduces the ultrasonic noise that a male produces, this in turn repels the female mosquitoes.
Mosquito Repeller / Insect and Bug Repeller Electronic Kit Reviews: