Everyone seems to tell me not to worry bout wood mites, but no less than twice have I found them on my snakes congregating at their cloaca and nostrils, looking like they started chewing the anal plate. I had that happen to a garter and a king snake. This is aside from other occasions where I found them with no further consequence. But those two instances was just wierd. Watch out for them carnivorous substrate mites, I guess.
The Herp Room
"The day I tried to live, I wallowed in the blood and mud with all the other pigs" - C. Cornell