Eliminate underground rodents from your lawn and garden using the power of the sun! Say goodbye to moles, gophers and batteries with this revolutionary solar-powered pest repeller! This safe, humane, environmentally-friendly device produces a sonic pulse that you and your pets can barely hear, but it makes burrowing rodents run to safer ground away from your lawn and garden. It covers a 6,000 square foot area. During the day, it runs on the sun. At night, it"s powered by an internal rechargeable NiCad solar charged battery for 24-hour-a-day protection. 12H x 6 diameter.