Crabgrass has gone to seed here in Grand Rapids. (August 3rd.) What stage is it in where you are? Does Drive still work? Are you using the higher rate? How high? More surfactant? How much surfactant is too much? Which surfactant for weed control is best? MSO? LI700? Crop oil? Silicone type? Does Drive work better when it is hot? Low volume or high volume? What about the southern grass crab products?