So I was just wondering if mites could be lethal to snakes? And young snakes especially?

I've seen plenty of mite topics recently, but never heard what the outcome could be if they went untreated. :/ I only ask because I saw the 3 baby '11 normals at the petstore where I get my feeders that were literally CRAWLING with mites. One looked dead in the back, but luckily was still alive when I took him out to check and then stuck him in some water to soak, telling the owner of the store to order some PAM ASAP because whatever mite spray he claimed to have been using was OBVIOUSLY not working. (Thank goodness the rodent room is no where near the herps. I still washed from like elbows down three times before gingerly getting my kids out to feed while I showered.)

At any rate, I was just curious what might happen to the little buggers if he doesn't start treating them more appropriately? Will they die?