I haven't had a single problem with my snakes shedding since I moved them into a rack. It's like magic!

That, and the tubs seem to hold the perfect amount of moisture.

Mine have a plastic hide, a water bowl, and newspaper substrate. I don't mist and the only additional moisture in any of my tubs is the water my het pied slops around when she's positioning herself so that she can crap in her water bowl.