This ultrasonic mouse and rat repellent combines variable and fixed frequency ultrasonics with LED flashes to effectively act on a wide range of rodents: mice, rats, squirrels, bats, etc. It offers a non-lethal solution to keep rodents away from your indoor environment. The emitted ultrasonics disrupt the nervous system of rodents, forcing them to seek other shelters. The device provides a wide 360° coverage, ideal for large rooms such as houses, apartments, cellars, restaurants, attics, and garages. Ultrasonics do not penetrate walls and solid obstacles, so it is recommended to use one device per room and place it on the floor. The LED flashes are automatically triggered in darkness to disrupt the activities of rodents living in darkness. Ultrasonics are inaudible to humans and most pets, except for rabbits and guinea pigs. For optimal results, it is recommended to leave the device plugged in continuously. Our customer service in France is available to answer all your questions within 24 hours.