My racks are all 32 qt with paper. I use hides when I can. The snakes seem happier and less strikey when they are in them. I am considering the switch to aspen though. What about feeding on the aspen? The paper annoys me, but I am sooooo afraid to feed on the aspen. If I fed live, not so big a deal but frozen thawed rats and mice stick to the aspen no matter how dry you make them. I am so scared my babies are going to ingest aspen and die. Especially my corns (another subject) balls are bigger so have a bigger digestive tract. I have talked to Adam W. and BHB about this and neither think its an issue, I still can't get past my total paranoia.