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?

7. Close the Burrow Properly

Only seal the hole after confirming the animal is no longer inside. Fill the tunnel entrance with gravel or a mixture of soil and cement. Then cover the area with heavy-duty wire mesh buried about 12 inches deep to discourage future digging.

8. Install a Protective Barrier

A long-term solution is to create a dig-resistant barrier around the shed. Use galvanized wire mesh buried roughly 12 inches underground and bend it outward in an “L” shape to stop animals from tunneling underneath. Extending the mesh about 24 inches above ground can also help prevent climbing.

9. Repair or Strengthen the Concrete

After the animal has been removed, inspect the concrete slab for cracks or weak spots. Minor cracks can usually be filled with standard concrete repair compound, but more serious damage might require additional concrete reinforcement or steel support. Regular checks can help avoid larger problems later.

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