?Solar Powered Device?: Built-in rechargeable solar battery to ensure sustainable operations day and night.The solar panel can convert sunlight into energy then stored in the rechargeable battery.Keep the solar panel clean as a dirty panel will reduce the sunlight available for battery charging ?Effective and Wide Coverage?: The latest ultrasonic repellent emits 15kHz to 65kHz low frequency pulses, which penetrate through the ground and discourage them from entering the protected area because moles are sensitive to sound andvibes.An effective way to deter animals like moles, voles, gophers and groundhogs prevents them from destroying your outdoor areas such as lawn, yard and garden ?Adjustable frequency?: Euipped with powerful LED flashing lights and detection device.With a built-in sensing light, it can detect animal movements and body heat with an angle of 120 degrees and a distance of 10 meters.Additionally, the frequency can be adjusted to emit an ultrasound mixture of various waves, strong flashing lights and a loud alarm to scare away animals ?Safe and easy to use?: All you have to do is insert this device into the ground.This sonic mole repellent stake is 100% safe because it drives away moles, voles, gophers, marmots and other burrowing rodents without using chemical means, but just an unpleasant sound that is transmitted at regular intervals, does not harm people andchildren or pets.like cats and dogs.