I'm fighting mites too.
Round 1....Green tree Fruit tree spray, 4 gallon total, two weeks ago...
Round 2...Azatrol, last week
Round 3 ....Green tree Fruit tree spray, 4 gallon total, sprayed on Monday another 4 gallons.
Round 4.... Hopefully the end of this week with Avid, ordered some last week.
I've got them knocked back pretty good now, but as soon as you turn your back...BAM their back!
Good luck on your fight...
TMB-
Hoping that will do it, I will continue to spray the Green Light Fruit tree spray since it has a fungicide in it too.