Personally, i think from a functional standpoint, the snakes dont NEED a substrate, but i do think at least some kind of liner is necessary. A snake having to sit in a puddle of its own pee and poop is disgusting, not to mention unhygienic. At least a layer of paper towels or something would absorb the liquids so the snake stays semi dri until you remove it. I couldnt imagine a snake peeing, pooping, then flipping its water bowl to make a "snake poop soup" would be very lovely to lay in...
sent from my incubator
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