Forno 2019 New Version Ultrasonic Pest Repeller, Pest Control Electrical Mosquito Repellent, Non-Toxic Pest Repellent Plug in Indoor Outdoor Pest Control Bug Spider Ant Mice Roach Other Insect 100% SAFE AND ECONOMICALDiscard your harmful chemical repellent. This electronic pest repeller is safe for human and our lovely pets like dogs and cats. Odorless, noiseless and no radiation, safe for pregnant woman and baby to use. Pest control uses ultrasonic frequency (22-65Khz) sound waves to drive pest and rats away without killing them. Usually ultrasonic repeller's take 3-4 weeks to make effect. DUE: If you are finding an instant solution, please select other chemical repellents. UPGRADED CHIPS TECHNOLOGYWhich is much better than normal ultrasonic pest repeller. The pest control ultrasonic repeller uses newest ultrasonic and electromagnetic waves to drive away mice, rats, spiders, ants, bugs, cockroaches, mosquitoes, fruit flies, flea, crickets, gnats, insects and rodents. WIDE EFFECTIVE COVERAGE The Ultrasonic Pest Repellent is effective for an area up to 80~120 Square Meters. Since ultrasonic sound can not penetrate wall and solid object, one room one unit is recommended. As for large storage area with serious pest infestation, additional units is required. EASY TO USE Just plug in please install our item at 80-120cm away from the floor. Just plug our electronic mice repellent into the socket and let it do the rest. And should be vertical to the floor and plug to the outlet. Due: please note that if you have a hamster pet at home, please do not use This ultrasonic pest repellent. WIDE COVERAGE AREAHomesweety Pest Repeller is effective for an area up to 1200 Sq. Ft. per unit.And please note that ultrasonic wave cannot travel through walls,so we recommend place our insect repellent 1-2 units in every room.