Ortho GroundClear 1 Gal. 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 is easy to use—simply mix 24 fluid ounces with one gallon of water in a tank sprayer. It is i for application in areas where you want to keep weeds away, such as driveways, sidewalks, gravel and rock landscapes, desert areas, under decks, parking lots, along fences and curbs, and other unplanted spaces. The fast-acting formula should be applied to actively growing weeds, delivering visible results within just three hours. This product a reliable solution for maintaining weed- outdoor spaces with long-lasting protection. Model Number: