【ADVANCED ELECTROMAGNETIC ULTRASOUND】The electronic repellent only emits ultrasound against mice, rats and other pests. Odorless and inaudible, it is extremely unpleasant for rats and mice. 【GET RID OF PESTS】our ultrasonic device is very efficient thanks to its new technology. It emits ultrasound of different frequencies to prevent mice, spiders, mosquitoes and insects from adapting to it and forcing them away 【EASY TO USE】Easy to use rodent ultrasound, just plug it into an outlet and adjust the level, it’s very easy to use. This ultrasound device must be installed 80-120 centimeters from the ground. And vertical to the ground and plug into the power outlet. This type of eco-friendly ultrasonic repeller is invisible and safe for humans and pets. It contains no chemicals or harmful radiation, no electromagnetic radiation, no noise pollution, safety and environmental protection, and has babies and pregnant women. Available, 100% safe and environmentally friendly