Obviously when winter comes, yes, but during the warmer months can I just leave the tray out? I have one of those generic coops that has the tray that you put wood shavings on and the roosting bars are above it. They poop so much, more than the others in a different coop; I'm wondering if they even need the tray. I think they can just walk up the ladder and hop on the bars. Anyone else do this and just let the poop fall to the floor. They are ridiculous!