I caught the nasty little f-ers almost exactly 7 weeks in. I mixed a 50/50 spray of rubbing alcohol (90%) and water. Sprayed down the plants thoroughly. Shook off excess.
Next day I hit them with Azamax and mixed it according to directions. In the next 48 hours they were almost completely gone. the one or two I still saw were motionless or barely moving.
I also sprayed down my garden area walls, table, etc. with the rubbing alcohol mix. Seems, for now, to have been successful.