YARDDOG Sonic Spikes Solar Powered Mole and Gopher Repellent

YARDDOG Sonic Spikes Mole and Gopher Repellent Solar Powered. The YARDDOG Sonic Spikes send sound waves throughout the surrounding ground at 400-1000Hz every 30 seconds. The waves travel up to 7000 ft/2 and are intolerable for pest including, but not limited to, Gophers and Moles. The Sonic Spikes contain solar panels that recharge an internal battery and ensure prolonged use and repellant of pest. The Sonic Spikes work best in clay soil types where sound can be conducted more effectively than sandy or peat soil.