Will Drive burn grass at high rates or high temperatures? When mixed with surfactants or broadleaf herbicides? I tried it using Drive 75 WP at 3 teaspoons per quart (about a half ounce per quart or 2 ounces per gallon). I included 3 milliliters of Bonide Turbo spreader-sticker per quart, (about 0.3 percent). I sprayed a spot with a hand held sprayer for 5 seconds. Temperature was 80 degrees. At 24 hours no injury to the grass was visible. What is your experience? Have you caused burn with Drive or other quinclorac products? Is there a difference depending on temperature? The label seems to suggest that fine fescue is sensitive to Drive, but still recommended. At one point label says it is OK spray new seed, and in another chart it is not safe. Mysterious.