I made a burrow box for my rat snake, its 6"x6"x18" and is filled 2/3 with a mix of marble sized stones, shredded cardboard, and shredded paper towel. I intend to add some cypress mulch to the mix when I can pick some up. I've seen him doot into it but not really burrow in yet (it hasn't bee long). Does this sound okay to you? He's still a young snake, about an inch thick at thickest and roughly 4ft long. I just want him to be a happy rope
I would do away with the stones, as they’ll just end up falling to the bottom anyways :) But one of the best burrowing substrates if you’re not gonna go with wood is actually just plain shredded paper! If you know someone with a shredder that would be the best way to do it :)