Raven has substrate. Adalae does not because she doesn't like it. She won't sit on it. Instead, she plays "dont touch the hot lava" and climbs on the edge of her water bowl, hides, rocks, etc. to avoid the dirt. So she just has paper. she also doesn't have any decor in her cage because she shoves it all to one side and gets angry over it. I swear, if you just stuck her in a big box with some tree branches, that'd be all she wants. She doesn't even use her hides properly - she sits on top of them. She's a very frustrating snake!