Safely send moles and gophers scurrying from your yard unharmed with this Victor Solar Powered Sonic Spike. When placed in the ground, sonic pulses penetrate the soil, emitting a sound that is highly irritating to moles and gophers. For your convenience, the spike is built with a low-profile design that can be mowed over when properly installed. Plus, its safe to use around pets when used as directed. Note: It may take 7-14 days before moles and gophers start to move away from the target area.