Groofoo - Ultrasonic Mosquito Repeller, Rodent Insect Repellent Electronic Mosquito Repeller Anti Rats, Cockroaches, Flies, Ants, Spiders [4 pack]

【Ultrasonic Insect Repellent】To better disturb and irritate the nervous system of insects, which can effectively keep flies, fleas, mice, rats, cockroaches, mosquitoes, ants, spiders and other pests away from home. 【Safe and Environmentally Friendly】 No chemicals, no poison, no foreign smell, no noise, environmental protection and 100% safe for pregnant women, children and pets household, replaces harmful and dangerous chemicals. 【Wide Range of Applications】Small, lightweight, easy to use and carry. Widely used in home, warehouse, basement, garage, store, hotel, hospital, office, factory, greenhouses, etc. 【Wide Coverage Area】The ultrasonic repeller works on an area of 80-120 square meters. If you have ultrasonic insect repellent in every room, you can get the best results. 【Easy to use】 Plug the ultrasonic repeller into the power outlet, it will work! (20-80cm above the ground) Technical specifications: Shell material: ABS plastic. Frequency of sound waves: 22-65 kHz.