I have a method for cleaning out my flock's coop, but not so much for their run. I can move my coop around, but since they have the grass scratched down there I would like to leave the coop where it is. Any ideas on how to clean up/maintain their run? I've noticed that really it hasn't been too bad, but we've had a lot of rain lately and it just seems like there's a lot of poop in there.