Here is what I do and have real good success with . I amend all my soil with DE it takes care of pretty much anything in the soil I also dust the top of the soil with DE and during veg only I mix 3/4 cup of DE per gallon of water with sm 90 with my regular foliar program it creates a environment the mites can't live in and also stops their ability to travel around the plant and if by chance there is any sign of bugs left before I trip em I'll hit them with a light application of forbid. I have found this to be very effective controlling these fuckers I cant begin to express how well I think DE works. Repetition, cleanliness and attention to detail are your friends.
happy growing