Pack of Ultrasonic Insect Repeller, Upgraded Electronic Insect Repeller Plug This product is shipped according to the color or size of the main image on the product page. SAFE AND ECO-FRIENDLY Our ultrasonic pest repeller uses advanced ultrasonic and electromagnetic technology to naturally repel pests without killing them, and contains no harmful chemicals or toxins. This repeller is safe in the home and will not cause harm to children or pets. It is cheaper and more durable than those expensive pest control companies and other pest control methods. .Ultrasonic Technology Ultrasonic Pest Repeller uses ultrasonic and electromagnetic dual chips to work simultaneously to confuse the hearing and nervous systems of pests, thereby driving away pests quickly and effectively. Repels most types of flying and crawling pests including mosquitoes, spiders, bed bugs, cockroaches, mice, fleas, ants, fruit flies and more. Ultrasonic insect repellent with wide coverage is suitable for an area of 80~120 square meters. Widely used in homes, warehouses, offices, gardens, hotels, etc. Since ultrasonic waves cannot penetrate walls and solid objects, it is recommended to place one unit per room. For areas with serious pests and diseases, we recommend installing 2 or more devices. .Easy to use just plug the pest controller into the outlet. Please ensure vertical installation, 30 cm above the ground. And make sure there are no obstructions in front of the repellent, such as curtains or cupboards. Most clients can see results within 2-3 weeks and then we can say goodbye to the pests. Guarantee We take full responsibility for the product. If you have any questions about the quality or service of our products, you can contact us by email at any time. We will reply within 24 hours. .