How to Identify and Repair Mole Holes in Your Lawn

Spotting Mole Holes and Lawn Damage

If you notice uneven mounds or winding dirt ridges popping up across your lawn, chances are moles have been busy underground. These small mammals tunnel extensively as they search for earthworms and insects, pushing soil to the surface and leaving raised, rounded mounds without open holes in the center. You might also see narrow strips of grass turning brown where roots have been disturbed. Unlike voles or chipmunks, moles rarely leave large entrance holes near their tunnels, so these subtle signs can help identify their presence.

Fixing the Lawn After Mole Activity

Start by gently leveling out the soil from molehills rather than compacting it, which can suffocate grass roots. Spread excess soil evenly or move it to lower spots. Bare or damaged patches should be cleared of dead grass, the soil loosened, and reseeded with a grass type suited for your area. For raised tunnels beneath the grass, pressing down the ridges carefully when the soil is slightly moist helps roots reestablish contact without compacting the soil. Keep the area watered until new grass fills in.

Keeping Moles from Returning

While moles do help by aerating soil and eating insects, their tunnels can be a nuisance. Some use castor oil repellents, though results vary. To protect small areas like garden beds, burying wire mesh barriers can block mole tunnels, but widespread fencing is often impractical. Planting strongly scented flowers such as marigolds might discourage moles, though this isn’t certain. Encouraging natural predators like owls or foxes by providing wildlife-friendly habitats may help over time. It’s best to avoid pesticides aimed at grubs solely to deter moles, since these can harm beneficial soil insects and disrupt your lawn’s health.

If mole damage is extensive or repeated, consider consulting a lawn care professional for tailored advice. Maintaining good lawn care habits—proper mowing, watering, and quick repair of bare spots—can strengthen grass against further damage. Minor mole activity can sometimes be tolerated due to its natural soil benefits. By combining careful repair with thoughtful prevention, you can keep your lawn green and smooth without letting moles take over.