i use bone aid calci-sand...i've tried asking before if anyone else likes this stuff?...easy to scoop out nasty poop..says it's safe if they swallow any.....also i don't remember what i used to use(i think it was some kind of bark), but my last snake (Magenta) looked like it had choked on something when it died(i never fed in the cage and it had been refusing pinks)...it also had the loose wierd skin thing going on that i've talked about before...sorry to ramble but i thought thought Magenta's death had something to do with the substrate in her cage?
-nef :shrugs: