Yeah, I use paper towel right now too, but I find it a pain. It gets wet and wet paper towel stinks, and it gets ripped up and stuff. I think carpet'd be easier because you just have 2 pieces per tank and just chuck one in the washing machine when it gets dirty. My snakes don't burrow under the paper towel right now... they just use their hides.
I just wanted to know if towel will hurt them?