【NEW CHIP TECHNOLOGY - NOTE: Our products are much better than normal ultrasonic repellers. The ultrasonic repeller uses the latest electromagnetic and ultrasonic waves to drive away mice, rats, spiders, ants, insects, cockroaches, mosquitoes, fruit flies, fleas, crickets, gnats, insects and rodents. 100% safe for children, pets and pregnant women. 【MORE SAFETY FOR CHILD AND PETS Thr - Discard harmful poisons, dangerous chemicals, poisons and traps, without unpleasant smell. Advanced ultrasonic technology, this environmentally friendly, non-toxic device and tasteless, without any chemicals, safe for children, pets and pregnant women. Can be used safely at home and effectively eliminate pests. 【Wide Effective Coverage】- Widely use these repellents in kitchen, living room, bedroom, bathroom, warehouse, basement, offices, gardens, hotels, etc Coverage can be up to 800-1200 square feet. Because ultrasonic cannot pass through walls, so we recommend a pest repeller for each room will work