Hello Here is our run and coop. We originally laid hardware cloth 4 feet out from the side of the run and put cinderblocks and dirt on top, hoping to keep predators out. But, now we are fighting squirrels daily. They’re digging tunnels anywhere they can and have tried every square inch. We fill them as they come and they aren’t able to get back through, so they make a new one. We plan on laying a thick layer of sand and paving stone around the entire thing. But, do you guys have any suggestions in the meantime?