I should have listened to people on here about reptile carpet but I didn't. My gecko's teeth got stuck so I switched to paper towels. I have 2 layers of paper towel in my tank. Is this enough to prevent my gecko from being burnt by the UTH? Also how often does it need to be changed. My leo poops in a corner so, so far I have just been tearing that corner out and putting a new ripped of piece big enough for the corner. Is this ok?