Large coverage area: Ultrasonic coverage of up to 1100 square feet with ultra-wide frequency range, effectively defending against most types of pests. The mouse repellent ultrasonic plug is suitable for houses, bedrooms, kitchens, warehouses, garages, supermarkets, offices, hotels, etc. Easy to use: Just insert our cockroach killing box into the room, no batteries required, preferably 30 cm from the ground. The ultrasonic insect repellent is equipped with a full-wavelength light, which can stimulate pests to leave, and can also be used as a night light. High quality and no noise: The mouse repellent ultrasonic plug is made of high-quality ABS material and is noiseless. The frequency of the ultrasonic insect repellent is 25kHz-65kHz, which is suitable for common pests. Although the low-frequency ultrasonic wave is difficult for humans to hear, it is very suitable for repelling pests. Working principle: This mouse repellent ultrasonic plug-in releases dual-frequency ultrasonic battery waves to continuously stimulate and destroy the brain and nervous system of pests, affecting the auditory system to achieve the purpose of repelling pests. Harmless to children and pets: This mouse repellent ultrasonic plug adopts a specific ultrasonic frequency and will not cause any harm to children and pets. The ultrasonic spider repeller uses sound waves to repel pests, and there is no need to deal with dead insects.