I thought I was being nice and went and bought a small bale of straw to put in the boxes, but the chickens immediately kicked it all out. So the pine shaves are back in, but they move it around alot! My son went out to collect eggs, hours after I told him to, (I was out) and the chickens were pecking on one. Got a hole in it, don't know if it cracked in the box due to wood floor or if the girls did the deed themselves. But I am thinking some sort of padding might be good for the bottom...removable...as always, any suggestions?