We have a barn (no horses ) , but have had groundhogs move in.
This summer we had a professional trap 4 of them out of 5.

Now they are back . Any clue of what to do to deter them. They dug under the
hay rack and into the first horse stall.

Our problem now is they are going between the barn and our
house deck. Going to call the wildlife trapper again

Any ideas to prevent future problems?

(The coyote urine did not work)