1It is designed for the health of pets to drive away the mosquito, cockroach, fly, mouse and other pests. 2No electromagnetic radiation, no noise pollution, safety and environmental protection, available for infants, pregnant women. 3Use ultrasonic wave to send out high-frequency sound, ultrasonic wave changes frequency ceaselessly, stimulate and destroy mosquito brain nervous system, make mosquito feel panic uneasy, slouchy, escape a place, achieve drive mosquito effect. 4Ultra low sound to human pets, it has no harm and can be safely used. 5Suitable for both pets and people.