Safely send moles and gophers scurrying from your yard unharmed with this Victor® sonic Spike™. When placed in the ground and activated, sonic pulses penetrate the soil, emitting a sound which is highly irritating to moles and gophers who are virtually blind and overly sensitive to sound and vibrations. Climate permitting, leave the sonic mole and gopher repeller in the ground to repel new generations of pests.