I use sand in my covered runs. Actually I live in the sand belt in S.C.. I use the sand as I can screen it every day, and get the large poops out.This keeps flies from breeding, and the few that do get snapped up by my resident wrens.My clever husband put a 1/4 " hardware cloth bottom on one of those deep dustpans on a stick, available at Wal-Mart. I rake up feathers and poop into the pan, and the sand falls through.The poop goes on my flowers. It doesn't burn them due to having no shavings in it. My hydrangeas are loving it.Can you speak to this more. I don't currently use sand.
All those hydrangeas have grown up through bird netting , which gives the birds another level of protection under the monofilament lines covering the orchard.
There is NO chicken coop smell here either. The sleeping coop/ roosts are bedded in wheat straw. That gets shaken up everyday, and changed every 2 weeks.Poop boards make cleaning easy too.