This, snake excrement is going to be pretty "hot" stuff. Remember they digest bones, so their stomach acid is a lot stronger than what you'd get from an herbivore.
I do throw the soiled cypress mulch from my BRB's onto my veggie garden plot and under my raspberry bushes when I do a full clean-out every month, but the poop to mulch ratio is pretty low because I constantly spot-clean it. Cypress mulch is so expensive I can't bear to just throw it away if I can reuse it.