The ultrasonic pest and rodent repellent uses dual frequency conversion wave technology to stimulate the nervous and auditory systems of parasites, making them uncomfortable and uncomfortable to escape the scene. It is especially effective against mice, cockroaches, spiders, ants, insects, flies, mosquitoes, and other pests. This product is safe for children and pets, non-toxic, and environmentally friendly. It can be used anywhere in the house, such as kitchens, bedrooms, basements, garages, warehouses, etc.