I'm building a new chicken coop and a lot of the books say to build the nesting boxes floors on a slope to make the area uncomfortable for hanging out and possible using as a bathroom area. I cant find notes on which side to slope. Would it be slopped down at the back of coop area or toward the front of coop area? Building it today so any help would be great. Also what type of bedding for coop and nesting box? A lot of articles say no straw because of the little critters that reside inside of it. Any suggestions?