I have dozens (OK, several dozen), I keep all mine on paper substrate. A couple of layer of newspaper fpr added absorbancy and a layer of indented craft paper to look nice and keep the newspaper ink off the snakes.
For a good portion of the year I also give them damp moss in the hide boxes. This is what I call feeding season, they eat a lot and mess the cage more so to simplify things, I line the hides with paper as well.
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Thanks,
Dave Colling

www.rainbows-r-us-reptiles.com
0.1 Wife (WC and still very fiesty)
0.2 kids (CBB, a big part of our selective breeding program)
LOL, to many snakes to list, last count:
26.49 BRB
20.21 BCI
And those are only the breeders 
lots.lots.lots feeder mice and rats 

