(Cut/paste from the last time I posted about substrate)

I've tried a lot of different subs but in the end I went with paper for my bps. They don't "mess" that often so its not a big deal to clean up, but they can get messy themselves. I end up soaking them while I clean up their cage (viv, not tubs).
My Ratsnakes are in aspen, but they burrow a lot and need daily spot cleaning.
With adult bp's spot cleaning can mean removing large fist sized lumps of substrate to get all the soiled sub out.
I've tried majority of subs available here.
-I found dry Eco earth was very dusty, but clumped and cleaned easy. It was also either too wet or too dusty. My bp's kept sneezing from the dust. I also found it was constantly getting their water.
-Bark, when rinsed was good but really insulated against a UTH, 1 inch deep was about all I could put in, and almost useless with so little.
- I also tried a mix 50/50 Eco earth and bark but it ended up being the worst of both.
-aspen was good but still dusty and not cheap, also an insulator against a UTH.

I ended up using news paper, its almost free (mailers), dustless, little chance of injestion, and it doesn't insulate against a UTH for more stable heat. But there's no spot cleaning, the snakes can get messy, if water is spilled its not really absorbent. But when it is cleaned up, its clean.