How it works: The latest dual-chip technology emits ultrasonic waves to disorient and disturb pests so they can’t forage or nest there and drive them out of their homes. Effectively repel rodents such as mice, mosquitoes, cockroaches, spiders, insects, ants, cockroaches, fleas, etc. Easy to use: Simply fix the ultrasonic mosquito repellent 30-150cm above the ground at the outlet and make sure there are no obstacles such as curtains or cabinets in front of the mosquito repellent. Most clients can see results within 3-4 weeks! Then we can say goodbye to parasites and mice! Safe for children and pets: Neither humans nor pets can hear the ultrasonic frequency, which is harmless, environmentally friendly and safe for children. Ultrasonic parasite repellent is 100% safe for your family and pets. Wide and effective coverage: This ultrasonic rodent repellent is effective indoors up to 120 square meters. For best results, a room insect repellent is recommended as ultrasonic cannot penetrate