Something keeps tunneling under the concrete slab of my garden shed. I’ve filled it in, but every morning it’s back—and I’m worried it could damage the foundation. What would you do?

6. Use Live Traps Carefully

If harassment doesn’t work, live traps may be necessary. Choose a trap roughly 12×12×32 inches, bait with lettuce, carrots, or apples, and place near the main entrance. Always check local wildlife laws before trapping, and monitor the trap daily.

7. Seal the Burrow Safely

Only fill the hole once you are sure it’s empty. Use gravel or a soil-and-cement mix, then cover with heavy-duty mesh buried 12 inches deep to discourage future digging.

8. Install a Dig-Proof Perimeter Barrier

Prevent future problems with an underground fence around the shed. Use galvanized wire mesh buried 12 inches deep and bent outward in an “L” shape to block digging. Extend the mesh 24 inches above ground to prevent climbing.

9. Repair or Reinforce the Slab

Check the concrete for cracks after the animal is gone. Small cracks can be patched with standard concrete compound, but serious damage may require extra concrete or steel reinforcement. Regular inspection prevents bigger, costlier problems.

10. Make Your Yard Less Attractive to Groundhogs

Keep grass short, remove debris, and secure gardens with fencing. Plant groundhog-resistant plants or use natural deterrents like garlic or hot pepper sprays. Without food or cover, groundhogs are likely to move on.

11. Know When to Call Professionals

If traps fail or the shed shows serious structural damage, call a wildlife expert or structural engineer. Professionals can safely relocate the animal and assess your shed’s safety, saving you time, worry, and future expenses.