The short answer is yes. We try to maintain our runs a couple times a week. Checking for digging. We fill in dirt holes a lot over the summer. The does dig more than the bucks. Not screening the bottom of the run is a love hate operation. We want our rabbits to be able to dig a cold hole when it’s hot and be rabbits but a couple times they have gotten out. They sit around confused for a while and then crawl back in the run to eat their lunch. Hole gets filled shortly after.