Correct and easy to useOur ultrasonic mouse device is very convenient to use, just plug the ultrasonic repeller into the socket. Please make sure to install it vertically 7-30 inches from the ground. There is no noise during use, meanwhile the smart night light will create a warm and comfortable environment for you. Most customers can see results in 2-3 weeks! Then we can say goodbye to pests and mice! How it worksUltrasonic repeller adopt high-frequency ultrasonic technology to irritate and disturb the nervous system of pests, making them uncomfortable and forcing them to leave your house. Improved chip technology effectively repels mosquitoes, mice, rats, spiders, fleas, cockroaches, ants, flies. What's more, this mouse repellent keeps pests away instead of killing them, so you won't see any annoying pest body. Wide CoverageIts ultrasonic wave can cover an area of 80-120 meters squares. Due to strong walls which will weaken the effect of ultrasonic wave, we suggest using 1 unit per medium sized room. Additional units will be required in larger areas. The ultrasonic repeller can be widely used in homes, warehouses, offices, gardens, hotels, etc. Environmental and effectiveUltrasonic waves only have an effect on pests and mice. Environmentally friendly, no poisons, no traps, no dead pests, non-toxic and tasteless. For children/pregnant women/elderly people/pets, the ultrasonic mouse and rat repeller is safe and does not interfere with household appliances. Quiet and non-radioactive operation Energy savingThis ultrasonic mosquito killer mouse is made of high quality flame retardant ABS materials and consumes about 3-4W electricity, low power consumption. energy and long life. The device is energy efficient, quiet, safe, environmentally friendly and radiation resistant.