Ultrasonic safe: the ultrasonic solar repeller effective against rodents such as cockroaches, rats, mice, snakes and other pests, stimulates the central nervous system of mice by vibrating and emitting sound waves from 400 to 1000 Hz. Vibration interval every 30 seconds. It is very effective in eliminating moles and mice, and will not hurt people, pets and poultry, ideal for garden, farm, greenhouse. Energy saving and Waterproof: Solar powered, does not require extra batteries, which saves a lot of energy. Installation is completely wireless and hassle-free. Made of high quality environmentally friendly materials, it has a good IP65 waterproof performance and is not afraid of rain. Safety and Protection: Made of sturdy ABS plastic and corrosion-resistant aluminum, safe and product-free chemicals. No radiation, chemicals or odors, safe for humans and our pets. The green outer cover can be well hidden in plants and can also be used as a garden decoration. Wide effective working range: