Protect your garden and yard Do you often worry about pests around you? Do you want your terrace or garden to remain clean? Our state-of-the-art solar-powered ultrasonic wave repellent system effectively prevents pests from damaging your property and entering your lawn. Specifications: Materials: ABS plastic Acoustic frequency: 400~1000Hz Effective coverage: 650 m Integrated battery: 600mAh Be careful not to immerse it in water or rain. Reasons to choose us: 1.Can be charged directly by solar energy, no additional battery required. 2. The solar ultrasonic repellent can drive away moles, snakes, rodents and other destructive rodents. 3. Solar Ultrasonic Repeller No radiation, chemicals or odors, safe for humans, our pets and the environment. 4 x Ultrasonic Solar Mole Repeller Large Effective Working Area Each mole repellent device can provide up to 7,000 square feet of protection for your yard or garden. The number of steaks should be based on the size of the area you wish to cover to provide garden protection and pest control. Solar powered It does not require additional batteries, saving a lot of energy. It only takes 4 hours to fully charge under sunlight. Everything makes your life easier IP65 waterproof This device can be washed by water or rain directly. During inclement weather, if there is water on the ground, make sure the unit is at least 2 inches above the ground to prevent it from being submerged. Note: Check the ground before installing the equipment. Frozen or soaked soils are not recommended. Do not use a hammer or excessive force during installation. Choose a sunny location and make sure the battery is fully charged for best results. This product is rainproof, but do not soak it in the rain. In case of flooding or submersion, remove the repellent until the rain stops. It should be applied continuously for 7 to 14 days before soil rodents begin to leave the area. The effectiveness of the product depends largely on the type of soil. Wet sound is the best conductor of sound. Dry, sandy or peat soil does not direct sound waves.