I've just dug out decades old deep litter from one room of our two room coop. The old concrete floor had cracked enough to let a mink tunnel in, so I had to check for other cracks. Now I have a bare concrete floor in half the coop. I'll be digging out the other room on my next day off. I'm considering just shoveling the old litter into the first room, then repairing any cracks I find in the 2nd room and shoveling half of the litter back. It's basically just plain chicken poop that's old enough to vote. It'd be enough to cover both floors a few inches deep. I could also mix wood chips in from our woodshed floor, or add some old hay mulch or just plain dirt. What would you advise? Thanks!