Groundhog Burrows: What to Do About Them

If groundhogs burrow under your shed, along your fence line, or straight into a vegetable bed, they are not just making a hole, they are building a home that can expand fast. Those tunnels weaken soil, chew through roots, and create repeat damage if you ignore the main entrance. The good news is that you can stop new burrowing, block existing access, and make your yard a bad place for groundhogs to stay.

What Groundhog Burrows Look Like and Why They Matter

Groundhogs live in burrows, and those burrows are the center of everything they do. A main entrance is usually a round opening about 10 to 12 inches wide, with a mound of fresh dirt nearby. You may also see a few smaller escape holes, worn runways in grass, and piles of clipped plants near the opening.

These tunnels are not shallow scrapes. A groundhog burrow can run several feet underground and branch into sleeping, nesting, and escape chambers. That is why filling a hole with loose dirt alone fails. The animal clears it out or opens another exit.

Why the damage keeps growing

Groundhogs feed heavily on garden plants, clover, beans, peas, and tender ornamentals. Once a burrow is established near a food source, the animal returns daily and enlarges the tunnel system. Burrows under patios, porches, retaining walls, and sheds can also undermine soil support and leave voids that collapse later.

How to Tell if the Burrow Is Active

Start by checking for fresh signs before you take action. A clean hole with loose, moist soil at the entrance means the burrow is in use. Fresh tracks, new droppings, chewed stems, and a muddy or trampled path between the hole and a feeding area confirm recent activity.

Look for these signs in the early morning or late afternoon, when groundhogs are active above ground. If you see the same opening stay clean for several days, the burrow is still active. If dirt is packed in and no new soil appears, the main entrance may be abandoned, but you should still inspect for secondary openings before sealing anything.

What to Do First: Remove Food, Cover, and Enclose

The fastest way to stop new burrowing is to remove what attracts groundhogs in the first place. Cut back tall weeds, mow grass near the burrow, and harvest ripe vegetables promptly. Keep pet food, fallen fruit, and bird seed off the ground.

Trim vegetation within 3 feet of the burrow opening.
Install a 4-foot tall wire fence with the bottom 12 inches buried or bent outward in an L shape.
Use 1-inch or smaller galvanized wire mesh for gardens and beds.

Pin the fence tight to the soil and seal gaps at gates, corners, and shed edges.
Protect individual plants with cloches, small cages, or rigid hardware cloth rings.

If you are protecting a raised garden, extend wire mesh under the bed before adding soil. Groundhogs dig at edges first, then work under weak spots. A solid barrier at the perimeter is more effective than trying to defend each plant one at a time.

Trapping a Groundhog Safely and Legally

Trapping is the right option when a groundhog has already settled in and exclusion alone will not solve the problem fast enough. Use a large live trap, at least 32 inches long, baited with sliced apples, cantaloupe, or fresh lettuce. Place it near the burrow entrance or along a travel path, but not directly in front of the hole.

Check trap laws before setting one. In many states, groundhogs are regulated wildlife, and relocation rules are strict or prohibited. If relocation is allowed where you live, use only a legal site and transport the animal in a covered trap per local regulations. Once the groundhog is removed, seal the burrow after you know no other animal is inside.

How to Close the Burrow So It Stays Closed

Sealing the main entrance is the key step after the animal leaves. Pack the hole with crumpled hardware cloth, then fill it with compacted soil and top it with rocks, sod, or a buried fence edge if the area needs long-term protection. A loose dirt plug is not enough.

If the burrow has multiple exits, close every opening at once. Wait 24 to 48 hours after blocking the main hole to make sure there is no fresh digging at another exit. If new soil appears, a groundhog is still inside and you need to reopen the entrance or trap again before sealing.

Prevention for Gardens, Yards, and Foundations

Groundhog control works best when you make the yard harder to use before a burrow gets established. Keep grass short around buildings and fences, and remove brush piles, stacked lumber, and scrap boards that create cover. Place compost in a sealed bin, not an open heap near the garden.

For vulnerable structures, add a buried barrier. Use galvanized hardware cloth or welded wire, buried 12 inches deep and bent outward 12 inches at the bottom. Around sheds and decks, close off the space beneath with mesh so groundhogs cannot dig under the floor joists or support posts. Once the edge is blocked, maintain it every season so one weak spot does not turn into a new tunnel.

Frequently Asked Questions

Do groundhogs hibernate in burrows?

Yes. Groundhogs hibernate in burrows during the cold season, staying underground in a closed chamber where they conserve energy. They rely on the safety and insulation of the burrow system to get through winter.

Do groundhogs hibernate in the winter?

Yes. Groundhogs hibernate in the winter, entering a long dormant period after food becomes scarce and temperatures drop. That does not mean the burrow is empty year-round, so do not assume a winter hole can be ignored without checking for signs of recent activity.

Can I just fill in a groundhog burrow with dirt?

No. A groundhog burrow needs to be cleared by the animal or sealed after removal. Filling it with loose dirt alone gives the animal an easy way to reopen the tunnel from inside or dig a new entrance nearby.

What is the best bait for a live trap?

Sliced apple, cantaloupe, and lettuce work well because groundhogs feed on sweet, tender produce. Place the bait at the back of the trap so the animal steps fully inside to reach it.

Will repellents stop groundhogs from burrowing?

Repellents help at the margins, but they do not stop an established burrow. Physical exclusion, food removal, and trapping do the real work. Use repellents only as a support step around plants and fence lines.