1. Advanced pest control: ultrasonic insect repellent is silent and easy to use. It uses ultrasound to interfere with the hearing and nervous system of rodents, making them feel uneasy and uncomfortable, ensuring that pests cannot produce immunity and adaptability, and thus cannot enter your house. 2. Effective for most pests: indoor ultrasonic insect repellent is effective for all kinds of pests, such as rats, mosquitoes, ants, cockroaches, spiders, ants, etc. You only need to use this insect repellent plug-in to solve many pest problems without using many other traditional pest control. 3. Safety of children and pets: neither humans nor pets can hear low-frequency electromagnetic sound waves, and there is no noise in the room that may affect you and pets, so you need not worry about hurting their health. This acoustic insect repellent is safer than traditional equipment, non-toxic, tasteless, and harmless to humans and pets. 4. Ultimate indoor coverage: electric insect repellent is effective in 1400 square feet of indoor area and widely used in families, warehouses, offices, gardens, hotels, etc. We recommend that you install one in each room to completely cover pests. 5. Easy installation: just plug the insect repellent ultrasonic plug into the socket on the wall. When the blue light is on, the insect repellent can start without tools. There is no need to manually try to remove annoying insects and rodents, just let our products serve you! However, please note that our insertive repellent takes 3 or 4 weeks to achieve significant results.