Not sure if you can see from this picture ... but just under the roost I have a shelf with a one inch lip around it so that it can hold the PDZ. Under the shelf is my nesting boxes. I just use a kitty litter scoop to clean the poop every day. It take 5 minutes. The shavings stay clean.Being new to this, and not having built our coop yet, was particularly interested in your " no smell" comment! What is a "poop board" and what is PDZ? Do you have any pics? thanks!