So I've slacked a bit on upgrade #3. They're 1.5wks old now and there's 13 of them. Here are the materials I have: 3 - 8x4 pieces of OSB wood 1 - 8x4 piece of tempered wood 1 - roll of 4x100 safety fence 3 - 40 pound bags of pine pelletized horse bedding 1.5 - bags of normal bedding 50 - pack of training pads for dogs I also have the NeverWet spray I've never used, and a large plastic covering I can use. According to a quick google search, they need 2.75 sq ft each from 4-6wks old so that's what I'm going for. I'm just slightly short at 32sq ft. but it'll be big, and absorb the heck out of poop and moisture. I'm not exactly sure how to create or layer the bedding options, especially using the new materials. Any advice? For the home, I think bottom 8x4 tempered wood side up. The rest normal wood, 3 sides 4ft high. One side 2ft high and fencing to make sure they cant get out. I'm also tempted to get creative, but I think simplicity might be wiser... All they need is space, but stairs, levels, windows, and maybe even a pool sound great. Except the pool. That'd be a huge mistake. I'd love to get some feedback before I get started. Thanks! *edit* Oh, and on the bottom, I want to use the same screen as a screened door. And cut the wood so that I can easily slide the screen out, with all the bedding on top, for easy cleaning.