I picked up some small rats from my local exotic store and noticed small little mite like bugs crawling all over the fur. Has anyone ever seen this before. My concern is I fed one to one of my snakes before noticing them on the other rat.

My hope is that they are not harmful to the snake? I'm assuming they are probably specific to rats and not snake mites and I obviously don't want to treat the rat before hand, making the rat toxic. But I'm hoping they don't harm my snake from the inside.

I wonder if this is just from a dirty pet store?

Any insight would be great.
Thanks!