Cypress mulch for a couple of reasons.... #1. It does wonders with regulating humidity. #2. IMHO seeing a ball python slid out of a drawer laying on newspaper with a water bowl is kinda upsetting to me. I can see why big time business breeders do it when they have hundreds upon thousands of snakes to deal with... These are my pets and I want to try and make them as happy and comfortable as possible. I dont know if they live in and around cypress mulch in Africa, but I'm pretty sure they dont live on paper towels or newsprint there either;) Not to mention it just looks like crap....