General description Are rodents scratching your walls and invading your home? This ultrasonic mouse and rat repellent is the solution to your problem. Designed to effectively repel mice, rats, dormice, and weasels, this new model for 2021 is easy to use—simply plug it into a power outlet and let it work. The device eliminates rodents within three weeks and is inaudible to human ears and pets, making it a safe choice for households. Technical specifications Effective coverage area: 800-1300 ft² Power source: Plug-in Frequency: Ultrasonic (inaudible to humans and pets) Usage Place one device per room for optimal effectiveness. Not effective against insects (flies, spiders, cockroaches, etc.). For large infestations, use multiple devices in different rooms. Other information 100% safe and environmentally friendly. Non-toxic and safe for children, family, and pets. Do not use if you have a hamster at home.