【Ultrasonic Pest Control Technology】: The electronic insect repellent works by ultrasonic waves. Ultrasound stimulates the pest’s brain and auditory nervous system, keeping pests, mice, rodents and mosquitoes away from your home. 【Quiet and Noiseless】: The ultrasonic waves emitted from the repeller are far beyond the range of human hearing, no need to worry about the noise, allowing you and your family to sleep well 【Safe for Child & Pets】: The ultrasonic mouse repeller physically destroys the living environment of pests, only affects pests and mice. Free of poisons, odors and chemicals, it is very safe for children, pregnant women and pets. 【Easy to use】: Just plug our ultrasonic pest repeller into outlet, blue light on means it is working, also can be used as a night light. Make sure there are no obstructions such as curtains or cabinets in front of the repeller. To note: Our ultrasonic repeller takes 3-4 weeks to see visible results 【Widely Used】: The insect repellent can