Ultrasonic Pest Repeller Plug in 10 Pack, Electronic Mouse Repellent Devices, Get Rid of Mosquito, Mice, Cockroach Spider Bed Bug, Indoor Pest Control for Home,Warehouse,Office,Kitchen,HotelBrand: wyewye Color: white Features: Easy Installation: The electronic pest repellent plug into an electrical outlet, they start working, and they glow blue, which means they're getting rid of insects. No noise, no smell, and can emit Safety Meets Effectiveness: This electronic pest repeller repels uninvited guests like rats, bats, mosquitoes, roaches, and spiders without any chemicals, radiation, or toxic odors, 100% environmental Easy to Use and