We are building a 2nd coop and I was looking around for ideas to cover the poop board with. I heard that boot trays work well, but I couldn't find them locally and they seemed pricey online especially considering shipping. I was finding them for about $15-18 each. I had to go to the Dollar Tree today to get some stuff for my daughter's bday party, and they had a whole bunch there for $1 each!! They are 13x22 so I will have to put them side by side, but it'll work for what I need! It might even be easier than taking a big one in and out to dump off and clean up. They also had good size bins to use for next boxes - $1 each. Woo hooooo!