Function: Ultrasonic defense with solar operation and against cats, dogs, martens, animal defense, cat fear, dog fear, marten fear Effective and healthy: Without chemicals, the mole repellent vibrates and generates 400-1000 Hertz sound waves through the buzzer that stimulate the mouse’s central nervous system chemicals or toxins that can harm your soil, pets and family. li> 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> Convenient to use: Equipped with solar panels and rechargeable batteries, which can absorb sunlight and extend the working time, the battery does not need to be replaced and charged. li> The product has quality problems within three months, please contact us and it can be replaced free of charge. li> Product description Important tips: 1. Suitable for all weather conditions.