Okay, I haven't started the actual cleaning part. I'm trying to decide the best way to attack it. There's 6-12" of dry poop, food and bedding. It's very dusty. I was thinking I may spritz it down with water first. I also considered a shop vac. I was originally going to shovel it right out onto my manure pile, but while I was lying in bed last night thinking about it, I thought it might be better to shovel into trash bags and dispose of. My chickens free range and are always in the manure pile.
I pulled out the many feeders and loose stuff. The galvanized waterer is rusted inside. Is it still okay to use if I scrub it?