Ultrasonic Vibration RepellentSonic Pulse emitted sonic pulses every 20 seconds, which penetrates the soil and forces pests to evacuate the area covered by the sound. The ultrasonic waves irritate them, simulating danger and repelling them from the irradiated area. Solar Powered EnergyEquipped with solar panels and rechargeable batteries, able to absorb sunlight and have a longer working time. The battery does not need to be replaced. In the absence of bright sunlight, the mole Repellent has a battery charge time of 3 to 4 hours for 5-7 days of use. Eco-friendly & SafetyBurrowing rodents are virtually blind, but extremely sensitive to sound and vibration. Our sonic mole repeller emits sound pulses and ultrasonic waves without any usage of harmful or toxic chemicals, which is 100% safe for children, pets and people. Will not pollute your garden and farm plants, or crops. Waterproof & DurableMade of high quality ABS and aluminum materials, corrosion-resistant, safe and chemical-free. With an IP65 waterproof design, the Sonic vole repellent can work continuously both day and night, even on rainy days. The economical rodent repellent can be used for a long time without increasing the burden on the floor. Extensive CoverageWorks in a circular pattern, approximately 15 meters in radius and covers up to 650 square meters. Just choose an optimal location for sun exposure so that the solar panels can receive light as directly as possible, and then turn on the ON/OFF switch. It will effectively repel snakes, moles, gophers, rodents, rats, voles hiding in lawns, gardens and yards.