One of the main reasons that moles invade your yard is to search for food. So, a good first step is to eliminate a mole's food source by having a lawn treatment service performed that will eliminate grubs and other types of lawn insects. You will also want to avoid overwatering your lawn. Moles like soft, damp soil. If your soil isn't overly damp, and no food source is available on your lawn, Moles will most likely find a more suitable lawn for their needs.