Natural cage for a retic?

[Skyrivers]

I think most people don't keep the adults on natural substrates because of the sheer volume of urine these snakes produce. I've had some of them flood their cages 2, 3, and 4 days after eating, which would require replacing all of the substrate. That's a lot of aspen or cypress mulch to replace every day.

I am lucky. Rainbow pees in her swimming areas. Is easy and cheap to empty, clean, and refill them.