can mites get on and in the hair?

Answer 1

Absolutely, yes. Most of your home, probably, has dust mites.....yes, even your bed. This is not to say you live in a dirty home, at all! Rugs, mattresses, blankets, sweaters, furs can really get full of mites, without help of dirtiness. These can get into your hair and anywhere else they'd like to jump onto.

Answer 2

of course, anywhere around the house...