JALL Upgraded Ultrasonic Pest Repeller Plug in Pest Control, Set of 4 Electric Repellent for Cockroach, Mosquito, Mice, Rat, Roach, Spider, Flea, Ant, Fly, Bed Bugs, No Traps Poison & Spraye Heating HEPA Filtration & Multi Floor

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JALL Upgraded Ultrasonic Pest Repeller Plug in Pest Control, Set of 4 Electric Repellent for Cockroach, Mosquito, Mice, Rat, Roach, Spider, Flea, Ant, Fly, Bed Bugs, No Traps Poison & Spraye Heating HEPA Filtration & Multi FloorSAFE AND ECONOMICAL Different from chemical, this product is safe for human and pets. It uses ultrasonic frequency (22 65Khz) sound waves to drive pest away and takes 3 4 weeks to make effect. EASY TO USE Just plug it into the socket and let it do the rest, no more to do. WIDE EFFECTIVE COVERAGE Effective area up to 80~120 Square Meters. Since ultrasonic sound cannot penetrate wall and solid object, one room one unit is recommended. USE FOR MANY PESTS