I was planning on using crushed rock then several inches of sand with a layer of landscape cloth between to keep the sand from washing thru. So my question is, the area we are using is very uneven clay type soil. We were using the crusher waste to flatten everything out.... Can I have the rock, then throw top soil on that then start the deep litter? Or does anyone have a better suggestion?
You sure can. If you maintain it deep enough and long enough, that will all turn to soil right on top of your rocks. You won't even need to place top soil on top of the crush and run, the litter will break down and do just fine over time. I'd skip the sand and landscape cloth, though. Not necessary.