Substrate options?

[Penultimate]

I have heard about the mold thing too but honestly I have sprayed my corn snake's cage when she is in shed (she is the only one I use aspen for ATM) and it hasn't molded yet. I think it would mold if it got seriously drenched and feces were to be left too long. A little spray down to up humidity probably wouldn't do too much damage. Buy a little bag and do an experiment without a snake (act as though there is one by spraying, water dish, and heating) and see what happens.

That sounds like a good idea. I don't normally spray cages for shedding, I've always just added an extra water dish and been fine. I think I'll give this a try and see how it goes.