I have recently switched all my adults and juvies over to Reptichip. I've used everything from unprinted paper to Sanichips aka the devils dandruff. I've only been on it for about 2 months now but I can tell you that it has one up side to the triple milled aspen I use as well. When it gets damp it doesn't pack down and mold the way the aspen does. So when it comes time for a complete change out it just pours out like marbles out of a bucket. The one thing I've also noticed is that my bigger snakes can push it up and lay directly on the tub bottom this can be a problem especially in the winter if you're like me and cool your room down for breeding.

Over all once you get past the initial soaking of the bricks to get them broke up its a really good substrate.