This environmentally friendly pest deterrent is powered by an integrated solar panel that drives away underground pests like moles, voles, and gophers without complicated set up or external power. The weatherproof anodized aluminum spike stakes into the ground, where it emits sonic vibrations every 30 seconds that irritate burrowing pests and compel them to disperse. The deterrent operates within a diameter of 94 1/2', and the 3" sq. solar panel charges an integrated battery during the day, even in low light and overcast conditions, so it operates both day and night. The panel fully charges within three hours in full sunlight conditions and will operate for up to eight hours on a full charge. Replaceable rechargeable battery pack included. Price includes two deterrents. 13 3/4" H x 6" W. (1 lb.)