【Wide Effective Range】The effective range of the solar ultrasonic pest repeller is a circle with a radius of approximately 15 meters, and the effective range is 300 square meters. This product is suitable for open lawns, parks, farms, gardens, and other open spaces. For best results, it is recommended to install two devices every 30 meters in areas where rodents frequently occur. 【Solar Charging】Powered by a solar cell, no additional battery is required. By installing it in a sunny location, you can always charge the built-in battery and avoid worrying about running out of battery power. This is because the precision performance of the solar panel has been improved. A full charge can continue to work for 5-7 days to ensure normal operation on rainy or cloudy days. 【Waterproof and Durable】The mouse repellent is made of high-quality ABS and PVC materials and will not corrode easily if placed outdoors for a long time. This mole repellent has good waterproof performance and is not afraid