my stepfather has been collecting rocks and he has given me the ok to take a few from the yard and introduce them into my kingsnake habitat, now i have picked some smooth ones and some ruff ones for shedding and just, all in all a rough surface for my Kings to slither on and i was just wondering if this is a Do Or Dont ? any help from the pretty knowledgeable ppl at K.S.com would be well taken!Mike.