I am not sure what I expected, but man! My nesting boxes that I put in my pen last night are REALLY REALLY disgusting this morning.....I hardly had any poop at all on the floor of my pen, and one look at my nesting boxes and you can see why! I thought I would do the deep litter method in the nesting boxes, but if this keeps up, not sure what to do with all the straw I am going to go through changing the boxes every single day. I knew they would poop in them some, but....wow!!!! Continue to be surprised by these little darlings.