I personally don't use tiles, but it's a good option, it keeps their nails trimmed and they will stay warm from the heat during the day, so that it's warm at night. What I use is the bricks of ZooMed coconut fiber, I use it dry. It's digestible incase they ingest it, and it can look kinda like sand. The liner that you can get at pet stores isn't as safe as you might think it is though. It took one of the long toes of my beardys back foot, so now he's missing a long toe. So tile is a good option, but it's best to get one that's not slick so that they can get a grip.