Dean, so far, I am really liking the naturalistic route. The behaviors that our young male is exhibiting is fantastic (far more wary of his surroundings than before when I kept him on paper). Our concoction consists of top soil, torpedo sand, beach sand, pea gravel/river rock, jungle litter (by ESU), a little peat and voila, one great substrate. There has been ZERO odor (although it has only been a month), spot cleaning is exceptionally easy, and there has been NO skin problems whatsoever (in fact, this snake, which previously had never had a real good shed, just shed his skin in one piece). I am seriously considering goin this route with all of my indigos and I really love just watching this boy in his new digs. But, a part of me, like you, is hesitant to make this switch with everything....but I'm getting closer! Rob