This thread has been on edge. So are the red mites the ones I see scurrying all over the sidewalk in the spring?
I used to be concerned that they were the kind attacking my Arbs (sucking the foliage dry), but I think these are predator mites rather than spider mites which make webs and live off the trees and shrubs.
I just got a catalog from 
Arbico Organics does anyone have experience using their bio control products? I've had good luck ordering their ladybugs and arriving live, not so much with their mantis eggs hatching. They have numerous bio controls for sale, not very cost effective if you're on a limited budget so that's one reason I ask.
For example nematodes, predator mites, and other beneficial parasites and bacteria that can be used. Though I'm all for IPM, not getting to beat myself up just to try and stay natural in a crisis.