Pear Leaf Blister Mites - late stage

In my opinion, the bigger issue is the one I led with. My reasoning is that I’ve sprayed pyrethroids on a weekly basis, and had mite explosions on apple. A week is shorter than a life cycle of any apple mite I’m aware of. Ergo, the pyrethoids I was using must have a minimal, if any, efficacy on apple mites.