I put sand in mine, but am having a problem with it (especially because the "coop" is only raised two foot off of the ground and is enclosed, so I can't really access all of it). It's awesome the the poop really does desiccate, but is starting to build up. I think I'm going to start the deep litter method on top of my sand. I'd like to use straw for my nest boxes, and pine shavings for the floor/run of the coop. I'll get back in a month, or so, let you know how it's going.
