Depends on how deep the foundation is...but yes pavers and bricks can work wonders.I doubt they'll dig out enough to cause the coop to collapse, but you can encourage them to dig further out by putting bricks or pavers around the supports.
They are probably just trying to make a dusting spot for themselves.I NEED to know what to do! My chickens are digging their coop out of the ground! Well..... What should I do to stop them? I don't want the coop to collapse. ( SOME OF THE PICTURES HAVE THEM IN ACTION!)
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First I made the 'patio/threshold' in front of and under the door. They dug underneath it. So I added the row of bricks. They dug underneath it. So I added the 2x8x16" pavers on edge and anchored them in with rebar. That has worked well so far.