I have been growing for 25 years and never had mites. I got some clones from a dirty hillbilly and bam. I bombed twice with Docktor Doom 5.5oz can for a 700sq ft room. IT helped but they are still there.
I lowered my temp to 70 degress instead of 80 and now they are cohabititating with my girls. Yah they are there, but they are not killing my plants. Right now I am trying a Neem Oil/Foilage opener mix. The thought is the foiler part opens up the leaves and then they drink in the neem oil. Then when a bugger bites the plant, it dies. My firend used this to eradicate mites before. I will keep you posted.
The short of it is mite attack weak plants in extreme situations. High heat, low humidity, or weak plants. Keep your girls strong and they can fight for themselves....with a little help from chemicals.
Since I hate anyone who takes from my stash without paying, I also ordered preying mantis eggs. These guys are so interesting. They will hatch in 2 weeks, come out and hunt down everything in your enclsed room. Due to their size when they hatch, they are perfect voracious guys to get the job done. Once they eat everyone, eggs, women, children, they dont care, then they will eat each other. It is very similiar to the predatory mites you can buy, but those are more expensive and harder to keep alive. A PM will live hearty in bad conditions. And you can keep the guy who wins as a pet!!!
When I grew outdoors I had PM set up station on my plants. Thye kept them 100% bug free.
So lower your temp, put in good airflow and keep your girls healthy. Right now only my very lower leaves are being eaten, which aint so bad. I am planning on total extermination of their clans, its just some battles must be waged with time and patience.
If your plants are potted and mobile, I recommend putting them outside or in a bathtub and rinse the hell out of them. I like the tub bc they all go down the drain. I doubt you will get all of em, but this will flush away many breeding adults and eggs. Just my 2 cents.