Product Description. Safe Ultrasound: The solar ultrasonic pest repeller is effective against rodents such as cockroaches, rats, snakes and other pests. It stimulates the central nervous system of rodents by emitting 400-1000Hz sound waves that it emits and vibrates every 30 seconds. It is very effective in eliminating moles and rats and will not harm humans, pets or poultry, making it ideal for gardens, farms and greenhouses. Energy-saving and Waterproof: Thanks to solar energy, no additional batteries are needed and can save a lot of energy. The installation is completely wireless and hassle-free. It is made of high-quality and environmentally friendly materials, IP65 waterproof and does not stop even in the rain. Safety and Protection: Made of durable ABS plastic and corrosion-resistant aluminum, it is safe and chemical-free. No radiation, chemicals or odor, safe for humans and our pets. The green outer cover makes it easy to hide among plants and can also be used as a garden