What do you do to maintain your chicken run/yard? I have a yard fenced off so my chickens can wander in and out of the coop during the day while I'm at work. They're starting to scratch up all the grass and it's been raining a lot lately and it is very hot/humid, so the yard is starting to get a little mucky. Do you sprinkle anything out there (DE or something else) to help dry it up? Pine shavings, or perhaps sand? I thought about planting something, but I'm sure they'd immediately scratch it all up. Thanks!