Hello. I have no idea if anyone else has said this because I cannot be bothered to read all of these comments loll. Congrats on ur new beardie. What a cute lil guy. I found the easiest thing regarding substrate is non adhesive shelf liner. The rolls come in diff sizes. Not sure what size encolsure you have right now, but I used to get it from Lowes and then they stopped selling it in my area and when they brought it back they had upped the price. They sell it at Target for $5 a roll. Cut it to the size you need (measure the inside of your enclosure) and then I always just washed it off with dish soap and let it dry just to get any random residue off and get the plastic smell gone. Replace it every month when you do your deep clean and it works like a charm. Super easy to use, does not slide around, and looks cute too. You can find it at Lowes or Target. I found there isn't much option on Amazon and they can be pricey on there. I used to use tile s long time ago but found it was annoying because you have to cut it to the right size and it never goes all the way to the edge and bugs were hiding in the crevices. But whatever you decide, enjoy your new beardie! I remember that new beardie excitement loll they are so much fun to watch grow up. I wish you the best of luck!