The Anti Mosquito Prank is one way to eliminate them or simply to complement the basic protection methods. You won’t have to kill mosquitoes yourself, brush bites or splash heavily with a spray because ultrasound treatment is just as effective. The mosquitoes will be at a distance from you and will not be able to cause the slightest harm to your body. The Anti Mosquito Prank works at high sound frequencies. It has 4 frequencies to choose from – 13, 15, 17, and 19 kHz.