My girls are old enough to begin laying hopefully at the end of the month or so. I introduced them to their nesting boxes 4 weeks ago. They refuse to keep the bedding in the boxes, dragging the hay and shavings into their coop! Also, they've decided that one box makes an excellent outhouse!! Any suggestions on how to stop this behavior so they don't lay the eggs on the wooden base of the nest box?? PLEASE HELP!!!!