When I use the cardboard boxes, I make more of a corral. I take a plastic shower curtain and put that on the floor underneath. Shavings go on top of that. Keeps the floor clean and makes cleanups very easy. I sometimes have had 40 chicks so you can imagine the potential mess. Wen they start...
Despite the negativity for plastic totes, it's what I use. Large ones with lids. I also cut the entire top out of the lids and insert a cut to fit piece of chicken wire. That goes back on the tote when they start jumping. I also use the red heat lamp. You have to understand what you have and...