Ultrasonic Mice and Rats Repellent: The Garden Mice Repellent stimulates the central nervous system of mice by vibrating and emitting sound waves from 400 to 1000 Hz, it can repel mole, snakes, rodents and other destructive rodents, ideal for outdoors such as gardens, shipyards, terraces, garages, terraces, farms etc The ultrasonic solar repellent effective against rodents such as cockroaches, rats, mice, snakes and other pests. Energy Saving: Built-in high-tech solar panels, can be charged directly by solar energy, no extra batteries required, greatly saving energy. Which only asks 4 hours for full charge under sunlight. When fully charged, the mole repellent will keep continuous 24 hours protection even when cloudy day to prevent the return of mole and rodents. The green outer shell can be well hidden in plants and can also be used as a garden ornament. Safety and Effective: The installation is completely wireless and without problems. Made of high quality eco-friendly materials. No radiation, chemicals or odors, safe for humans and our pets. Ideal for the protection of your properties. Wide Range of Effective Work Solar mole repellent is powerful and effective. The device works in a square pattern, approximately 15 meters in radius and covers up to 650 square meters. For the best possible result, we recommend installing 2 devices every 100 feet. It usually takes 2 weeks or more for pests to leave the area.