Wide-area ultrasonic insect repeller, with a range of 100 square meters, using ultrasonic technology, powerful effect, poisons and insecticides can only work on a few pests at a time, while ultrasonic insect repellers can work on multiple pests, such as mice, mosquitoes, ants, cockroaches, spiders, etc. High-pitched sound frequencies are inaudible to humans, but can repel insects such as mice and mosquitoes, and can completely get rid of mosquitoes, fleas, ticks, mice, moths, etc. No need to clean up dead insects, keeping your home clean all the time. Low-frequency battery-powered wide-range sound waves are inaudible to human ears and pets, so you don't have to worry about damaging their health Plug this insect repeller into the socket and place it vertically on the floor, the machine will start working when the blue light comes on. For areas with serious pests, the sound waves are inaudible to human ears and pets, so you don't have to worry about damaging their health Battery powered. Requires 1 9V battery, not included Dimensions are H2.5cm, W8cm, D8cm As it requires no electricity, you can use it in any room, even in a garage, shed or caravan, 100% safe for humans and pets, no dead pests to clean up, no more calling a pest control technician for help, no batteries required, and saves a ton of money.