Solar Power: Equipped with solar panels and rechargeable batteries that absorb sunlight and last longer. The battery does not need to be replaced. Efficient and healthy: No chemicals, it vibrates and generates 400-1001 Hertz sound waves through the buzzer that stimulates the mouse’s central nervous system. It can effectively fend off mice, moles, gophers and voles without using harmful chemicals and toxins harming your soil, pets and family. li> Excellent waterproof properties: The product is rain and waterproof and can work continuously even on rainy days. But it can not be soaked in water for long. Extended coverage: Works in a circular pattern with a radius of about 15m and a coverage of up to 700 square feet. For the best possible result, we recommend installing 2-piece devices every 30-foot for floor areas frequented by moles. li> Suitable for multiple locations: Use it in your garden, farm or rice field to ward off moles, squirrels, voles, scales and other