An even lazier method, I just put a couple of bricks on the ends of the 1x6 across the doorway. During cleaning I just move the bricks, rake the bedding out, and then put the board and bricks back.NatJ mentioned having a barrier at the door so the bedding doesn't fall out. Good idea. But, instead of screws, I might use little boards at each end so the board barrier can be slid in and out.