My wife did a bit of general research and also found that combining neem oil with a treatment of baking soda is reported to work well. Seems to me you'd apply the baking soda/water followed up by neem oil after the baking soda drys a bit. In my case it didn't seem to take long, maybe 1/2 hour with the lights on.. I also think I was pretty liberal with the baking soda and next time would cut it back some. With plants in flower, probably best to focus low and avoid the buds if possible. So far no negative effects on the plants in flower that are nearing the end of week 4.. I also flipped 4 more plants yesterday and am watching them closely to make sure PM doesn't magically appear. Currently they're looking clean and haven't been treated with the above.

FR