I just made a lovely droppings board shelf all around the perimeter of my 8x10 coop (save for the side where the nests are). The shelf is 30" wide, plywood, and has an edge all the way around made of metal, which is 2" wide (salvaged from old steel framing studs). I caulked the bigger gaps between the plywood and metal so that nothing could fall out easily and make a mess. I put the 2 U shaped roosts, spaced 7" from the wall and 7" from the front of the shelf. There is 9" between and the rear roost and the front, and the rear roost is raised up another 2" from the front one. I guess in total there is around 525" of roost space. I have roughly 50 hens-well, mostly pullets right now anyways. I put a lot of work into this system, and based it on stuff I read on here last winter. I'm really interested in systems which reduce the amount of consumed goods. Since our soil is solid pure hard clay from 4" down, I could literally use my own soil if this works. My aim was to make it like a giant litter box, which I would fill with this stall dri stuff and scoop out each day. We don't have stall dri at our farm store, but we got this 'red lake earth' stuff which is listed as "montmorillionite clay and diatomaceous earth" So its basically powdered clay and DE. I thought that's what Stall dri is?? I put it in and the chooks went up....and POOF!! Dust everywhere. Everytime they flap or move up and down from the roosts. My OH suggested to mist it with water....I'm not sure. I don't see how this can work if it makes the air so poor with dust. I thought about using cat litter...but I think the chooks will eat it. I'm now thinking about sand......but its not really absorbent. How do others manage this system? This coop is winter housing only BTW. The hens will be living in a portable house surrounded by electronet come the warm weather again. any suggestions appreciated.