VNEED Ultrasonic Pest Repeller, Electronic Pest Repellent [2018 Upgraded] Plug in - Insects Repellent - Repels Mice, Bed Bugs, Mosquitoes, Spiders - Human/Pet Safe (4 Pack) LATEST TECHNOLOGY - Ultrasonic bug repellent uses 2019 breakthrough ultrasonic and electromagnetic technology. It generates ultrasonic, electromagnetic and bionic waves and combines multiple frequencies repel pest from your home. Mouse, mosquitoes, roache spiders, ants, moths, rats, snakes, bats, fleas, flies, birds, rodents, and insects. ?? ? ??MS Gothic ?er. ! PLUG-And-PLAY , NO NEED TO REFILL: - Our pest control mouse repellent is ideal for different situations, The green light deals with minor pest infestations; switch to a blue light when you have a reasonable pest infestation; and turn on red mode when you have an extreme pest infestation.but youll need to adjust each light mode properly in case the pests are immune from a specific sonic wave or interval. NO RADIATION CHEMICAL-FREE ODORLESS: - ECO-Friendly electronic bug repellent is 101% safe and effective,get rid of pest without killing them. Although Please note that ultrasonic waves cant penetrate walls, so in order to eliminate all pests wherever the wall, which results a better effect.Press 3 seconds to power on e item in each room. HUGE COVERAGE AND WIDE APPLICATION: The ultrasonic roach repeller covers over 800-1601sq.ft,widely used for households, storehouses, hotels, restaurants, supermarket, offices. And this pest repellent ultrasonic plug in for home is great replacement for mo ? ? ? ? ? ? ? ? ? ? ? ?