Has anyone used their low volume sprayer to spray bifenthrin, merit or some other insecticide? I want to use my ProLawn sprayer to spray for chinch bugs. I would think that the product would not reach the thatch layer, and there for do little good unless watered in. Anyone with a ProLawn, Z-spray, or Permagreen use them for chinch? By not using a tank sprayer,do you still get control even with the low volume of liquid? How about for grubs?