and i hear there is some kind of plastic grate you can put in the coop so the poop falls down into a pan below. How can the chickens walk on this grate, and where can i get some? Also, what is this Stall-Dri stuff i'm hearing about? Right now my chicks are in a samll coop in my basement, and the smell is getting worse all the time. Can this stall-dri help with the ammonia smell?