【Ultrasonic】The insect repellent repels all types of rodents and insects, including mice, spiders, cockroaches, flies, mosquitoes, bugs and ants, using ultrasonic waves to make them uncomfortable. (No harmful effects on humans, children and pets.) 【Easy to use】The ultrasonic insect repellent is very simple to use, you just need to hold the insect repellent vertically on the ground and plug it into the socket to work automatically. When the blue light turns on, it means that the product starts to work. (We recommend installing the ultrasonic repellent 20-80 cm above the ground.) 【Remarkable effect】A few days before use, the activity of mice and pests has increased significantly, which is normal. Don't worry! Because mice and insects that usually hide in their nests will flee their original hiding place when attacked by ultrasonic waves. Most customers see satisfactory results within 3-4 weeks! Wide Coverage & Versatility: The ultrasonic pest repeller has a wide coverage area and can