My situation is kind of odd because I originally ordered White Rocks, but (it seems) the hatchery sent me meat birds. They got big faster than I could get the barn/coop space ready! I really didn't expect to put them out in the actual coop/barn for another couple weeks. The meat birds will be fine where they are until they are butchered, but the egg layers (once I do finally get them) will need the rest of the barn. There is algae on the back walls, so I'm not sure how to clean them. I know birds can't do mold. Is algae the same?? It also has a dirt floor so I feel like it will take a long time to dry. Any suggestions on how to clean an area like this? I hate to use chemicals, so I don't know a lot about them. My previous barn was gorgeous. So easy to care for. This barn is old and a little intimidating! Thanks!!