I've heard a few different things about different substrates and have tried at least four now, first was astro turf which I got rid of because it irratated poor Dante's belly 2nd was that paper cat litter stuff I've heard about? No good, too dusty, and stayed way too damp. Mouldy, ick. So tried the bark, which was good, easy to clean but gave him splinters! *tears hair out* so today I went and picked up a bag of "Lizard Litter Desert Sand" by ESU Reptile which is finely ground walnut shells, has anyone else tried it? My poor stimsons doesn't seem to like it.... Keeps going up high or into his hide to get away from it I can see him thinking "Muuuum! I don't LIKE it!"