although it sounds like a wood mite (snake mites don't run fast) it can be annoying to the snake. snake mites are usually a dark brown and are normally seen around the eyes and nostril area. wood mites can come in from most wood, ie mulch and bark chips. and will breed prolifically if any area is damp, no matter how small an area. where u get the driftwood and other stuff from?
ps if u can bleach boil and bake!
In the kingdom of the blind, the one eyed man is king