I'm looking into changing Cake's substrate, and was wondering if things like coconut husk would be appropriate? Currently he's on Aspen mulch from Petco but I'm noticing that it retains moisture in a not good way, and I'm having to change it out often because I don't want rot.. While it's very attractive and fluffy, I notice that the snake sometimes gets some of it in his mouth at mealtime, and the wet mulch around the water dish doesn't dry out. Do any of you guys use cork liners under the mulch? Anyone has Cypress? Any input helps, I'm pretty tired of Aspen.