In my cage I use the Exo Terra Moss Mat. You can cut them to the size of the cage. But I would buy an extra pair for the cage, so when I'm cleaning the dirty ones I can put in fresh mats right away. And cleaning is easy too. I usually take them outside to spray them down with the hose and use a brush to get out poop or stains. Than I throw it into the washer and then air dry them. For the wall in my cage that does not have glass ,I put Greensmart Decor Artificial Moss Panels up. I found them on Target.com. They are normally for outdoor wall decorations but they look awesome in his cage. And he doesn't try to eat them and he can easily climb the walls if he wants to.