what ????

We use aspen pellets...they last forever...easy to scoop out messes. Gotta watch for mites with some bedding...they are terrible to get rid of

But if you do have mites.......In my book The Guide to Owning a Ball Python written by John Coborn it states inside that "Mites can be quickly eradicated using an insecticidal dichlorvos strip (of the type used to control houseflies). A small piece of such a strip placed in a perforated container and suspended in the terrarium will kill off free-moving mites. Remove the strip after three days then repeat the operation ten day's later to kill off any newly hatched mites. Two or three treatments will usually destroy all mites in the terrarium.

Thats typically used to getting a terarium mite free, so it can be used again. I'd probly use bleach and soap....

I've heard of all kinds of ways to kill bp mites. Powders, soaking, vaseline, too many to list. But I doubt bugs in a substrate are the same as parasitic mites.