ive used PM wash and SNS 244. PM wash seemed like you need to use it constantly throughout the grow (used it for 2 weeks through veg) it didn't really do well in getting rid of the PM, I would see more a few days after spraying. Good thing is you spray with lights on and there is no leaf burn. I just recently used SNS 244 last week, that stuff gets PM out. I sprayed with lights on and got some burn from it, it also burned a lot of the young growth (there was a warning on the label about this), but they seemed to recover the next few days. haven't seen PM since.
