Whats your favorite grassy weed control for cool season grasses. We mainly deal with sedge and crabgrass. In the past I have used q4 in a hand can with good sucess. This summer was very hot, hotter than normal. In talking to some guys in the area, it seems we have all burned the occasional lawn in spots by spot spraying with a backpack. I was using 3oz/gal, and I even cut that in half later in the summer, and calibrated. I was still noticing some burn getting only 1.5-2oz. of concentrate per k. This product has made me somewhat nervous because of the high salt content. I am thinking about trying solitaire next year. Does anyone have any experience with the safety of that? Does it settle out? I would like to leave it in the aux tank on my z overnight. Am I going to have to drain and clear the lines with water? Input please.