【Supersonic mosquito repellent】Supersonic mosquito repellent technology When connected, sound waves cover the environment. Thus, sound bombards the nervous system of most flying, crawling insects. Ultrasonic repellents will not kill the pests, but they will disperse them. 【Chemical-free environmental protection plug Electronic ultrasonic insect-proof plug is chemical-free and noise-free. The sound is imperceptible to the ear and therefore does not disturb or irritate humans, cats and dogs. Our ultrasonic rodent repeller is harmless and safe for home and pets. Your health is important to us. 【Large Coverage Area】This double chip system has ultrasonic driving pigeons, and the applicable area is 80-200 square meters. Protect your home, furniture, pets and family all year round. Has the ability to penetrate walls and repel most insects. Widely used in homes, warehouses, offices, gardens, hotels, etc. 【Easy to Use Insect Repeller】To turn on your ultrasonic insect repellent, simply plug it