Ultrasonic Technology: Our ultrasonic mouse repellent uses automatic frequency scanning technology. The constant change in ultrasonic frequency disrupts the nervous system of mice. This powerful repellent prevents any adaptation. Wide Coverage: Effectively covers up to 2,500 square feet (2,500 square meters) and effectively repels mice, rats, rodents, spiders, and cockroaches. It can be used in homes, restaurants, garages, and other locations. Two Mouse Repellent Modes: We give you peace of mind with a silent mode to combat common rodent infestations. Also, select the more powerful full-band amplification mode in areas with severe rodent infestations. Safe Mouse Repellent: It uses physical repellent, contains no chemical agents, is harmless to people and pets, and will not cause secondary pollution. It can be used as an indoor insect repellent. Simple and Durable: This ultrasonic insect repellent is easy to use. It simply plugs into an electrical outlet. Its lifespan is 2 to 3 years.