【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 that nest in your yard. It is harmless to humans and animals, but we recommend placing it outdoors. 【Large Coverage】Our products can effectively cover 7500 square feet and protect farms, courtyards, lawns, gardens, rice fields, and more. For best results, we recommend installing two sets every 100 feet in areas where rodents are common. 【High-Efficiency Solar Power】The rodent repellent is powered by high-efficiency solar panels placed in a sunny location for more than 8 hours. The charge typically lasts 5-7 days. Since it is solar-powered, there is no running cost. It is an energy-saving and environmentally friendly product. 【Durable and Waterproof Design】The ultrasonic mole repeller is made of high-quality ABS. It is waterproof, corrosion-resistant, and