Usage Tips:Keep your garden free from burrowing rodents with the Solar Sonic Mole Repellent. This ultrasonic and solar-powered repellent emits low-frequency sonic pulses every 30 seconds, irritating moles, gophers, and chipmunks. It takes about 2-4 weeks to drive them away from your garden, ensuring a critter-free environment. The mole repellent is charged by its solar panel, providing a 4-hour charge that lasts for 5 days. The solar panel is protected in a waterproof ABS plastic housing, ensuring durability even in harsh weather conditions. Each mole repellent operates in a circular pattern, covering approximately 40 ft. For severely affected areas, it is recommended to use multiple units for the best effect. The package includes 4 pieces, allowing you to cover small to large properties like lawns, yards, gardens, farms, and more. Installation is easy. Simply dig an 8" hole and insert the device 2-4" above the ground. Leave the repeller out in the sun for 24 hours to be fully charged before use. Remember not to immerse the repellent in water for a long time, as it may affect its service life. In case of heavy rain or rainstorm weather, remove the repellent from the ground, wait for the accumulated water to dissipate, and then put it back in the soil. After 2-4 weeks of use, your garden will be free of moles, gophers, and other nuisance critters. Enjoy a pest-free environment and a thriving garden with the Solar Sonic Mole Repellent.