【Safe and Effective】The ultrasonic mole emits a strong vibration wave and a sound signal. The sound waves and vibrations are emitted approximately every 25 seconds and are effective at repelling snakes, moles and voles hiding in your yard. It is harmless to humans and animals, but we recommend placing it outdoors. outdoors. 【Large effective working area】Our products can effectively cover 7500 square feet and protect farms, courtyards, lawns, gardens, rice fields and more. For best results, it is recommended to install two sets every 100 feet in areas where rodents are common. 【Solar Powered 【High Efficiency】The rodent repellent is powered by solar panels High efficiency, placed in a sunny location. for more than 8 hours, and charging usually takes 5 to 7 days. Since it is solar powered, there are no running costs. This is an energy-saving and environmentally friendly product. 【Durable and Waterproof Design】The 100% water resistance ultrasonic mole repellent is made of high quality