My wife keeps guinea pigs (no, not as snake food, as actual pets) and they use this stuff that absorbs the pee and whatnot. It does a really good job.
So another snake keeper told me they started using it and that it's great for humidity if you have issues with it.
Well, I've been using it with my boy Alex for about 2 months now and I must say I am impressed. It's so much easier to spot clean and it keeps the humidity well when you spray it, which I only do about once a week or so.
If you haven't tried it I'd say give it a go.