Thissolar-charged expeller can repel pests effectively by vibrations and sonic pulses while do not harm to human and environment, 8-hour solar charge lasts for 5 days, effectively and continuously preventing the return of rodents. Features: Watertight plastic housing and corrosion-proof spike make it more durable. Extensive coverage, radiates in all directions. Provide you a more humane and safer way to repel harmful rodents ( moles, snakes ) effectively without affecting families and pets. Solar-powered, green power, clean, pollution-free, and inexhaustible. 8 hours full charge for 5 days continuous working. IP44 water resistant, can work normally on rainy days, but please don't expose to heavy rain. Perfectly designed for outdoor pest control like repelling moles, voles, mice, rats, snakes, gophers in patio, lawn and garden. Specifications: Material: ABS. Quantity: 2Pcs / 4Pcs ( optional ). Shape: Circular / Square ( optional ). Charging Mode: Solar-Powered. Ultrasonicrepellentfrequency:22-65KHz Battery: Built-in 1.2V / 600mAh rechargeable battery. Power: 1W Voltage: 1.2V Product Size: 24.9 * 5.9 cm / 9.8 * 2.3 in ( Square ) Product Size: 24.6 * 6.3 cm / 9.7 * 2.5 in ( Circular ) Packing Size: 26.5 * 13.5 * 8.5 cm / 10.4 * 5.3 * 3.3 in Package weight: 380 g / 13.4 oz Package List: 4 * Mole Repeller Note: Insert the stakes into the soil, make sure the solar panel plate is about 4ines above the ground to avoid water flowing into the interior. We recommend an installation of the yard mole repellents on every 45 feet throughout your lawn for optimal performance.