【Safe and Effective】The ultrasonic mole repeller emits a strong vibration wave and a sound signal. The sound waves and vibrations are emitted approximately every 25 seconds and effectively drive away snakes, moles, and voles nesting in your yard. It is harmless to humans and animals, but we recommend placing it outdoors. 【Large Coverage】Our products can effectively cover 700 square meters and protect farms, courtyards, lawns, gardens, rice fields, and more. For best results, we recommend installing two sets every 30 meters in areas where rodents are common. 【Highly Efficient Solar Energy】The rodent repellent is powered by high-efficiency solar panels, which are placed in a sunny location for more than 8 hours. The charge typically lasts 5-7 days. Since it's solar-powered, there are no operating costs. It's an energy-saving and environmentally friendly product. 【Durable and Waterproof Design】The ultrasonic mole repeller is made of high-quality ABS. It's waterproof, corrosion-resistant,