Ortho GroundClear 1 Qt. Concentrate Year-Long Vegetation Killer is specially formulated to effectively kill weeds and grasses while preventing new growth for up to one year. This powerful concentrate can be easily mixed by combining 24 fluid ounces with 1 gallon of water in a tank sprayer, making it simple to apply in a variety of areas where unwanted vegetation is a problem. I for use on driveways, sidewalks, gravel areas, rock and desert landscapes, under decks, parking areas, along fences and curbs, and other unplanted spaces, this fast-acting formula targets actively growing weeds and delivers visible results within just three hours. Keep your outdoor spaces clear and weed- with the reliable protection of Ortho GroundClear. Model Number: