【Efficient pest control】What is a better sonic mouse repellent? The answer is frequency coverage and power. Using the latest AI frequency conversion technology, 22kHz-85kHz wider frequency, 8W high-power speaker, more effective than other ordinary products on the market. 【Human and Pet Safety】No more traps and kills, this upgraded ultrasonic repellent is only effective against pests, no radiation, poison or chemicals for humans, children and pets. But don’t use it if you keep a hamster as a pet at home. Sometimes pets can be very sensitive to sounds and that’s okay, it doesn’t hurt them. 【Wide Coverage】This ultrasonic insect repellent is equipped with a dual microchip system and is suitable for an area of 80 to 150 square meters. Since ultrasonic waves cannot penetrate walls and solid objects, it is recommended to place one in a room. Additional units are required for areas with severe pests. [Effective time] It usually takes 3 to 4 weeks to take effect, and it takes time to destroy