Good quality Good quality is inseparable from better materials: the main shell is made of flame-retardant ABS material, which has strong high temperature resistance and guaranteed service life. Safety This mouse repellent adopts the latest technology, emits ultrasonic waves of different frequencies, stimulates the nervous system of insects and mice, making them feel uncomfortable and gradually escape. Intermittent changes in ultrasound frequency prevent them from developing immunity and adaptation. Uses ultrasound to repel rodents, is effective and non-toxic and poses no health risk Avoid Car Attacks Small animals and rodents can chew through wires and pose a safety hazard to motorists. Prevent nasty animals from damaging your car parts and injuring yourself or others. 24-hour long-term protection Ultrasonic technology silently drives away mice, easy to carry, a small battery is enough. It can be charged with a USB adapter, install 4*AA batteries, and connect to the vehicle power supply (convenient three options) Designed for vehicles Can be used almost anywhere such as vehicles, garages, attics, barns and more where a 12 volt battery can be used