Yeah mites are literal DEMONS! If you want a better understanding of their life cycle here is some helpful info that goes more into depth about them.
http://vpi.com/publications/the_life...of_snake_mites
OP I reccomend if you can, grab a hold of Prevent-A-Mite to treat your enclosure. It kills all life stages of mites.
http://pro-products.com/provent-a-mite/
Good luck! With patience and persistence I'm sure you will eradicate them! Just give it 2-3 months