VEPOWER [2018 Upgraded Ultrasonic Pest Repeller, Mosquito Repellent, Electronic Pest Control Plug in for Spider Ant Mice Roach and Other Insects (4 Packs)[2018 Ultrasonic Pest Technology] This Ultrasonic Pest Repeller drives pests out of your home for Mice, rats, spiders, roaches, mosquitoes, ants, bed bugs, and other kinds of pests, which makes them even mice extremely uncomfortable. [Keep Environmental Friendly and Safe] This product causes no harm to human or pets. Electrical Bug Repellent drives pests out without killing them, has no chemicals, non toxic, no radiation. Definitely an eco friendly