Description Ortho GroundClear Year Long Vegetation Killer is formulated to kill weeds and grasses and prevent new growth for up to 1-year. This ready-to-use product can be applied with the attached Comfort Wand to areas where weeds are not desired, including driveways, sidewalks, gravel areas, rock and desert landscapes, under decks, on parking areas, along fences and curbs, and in unplanted areas. This fast-acting formula should be applied to actively growing weeds. You'll see visible results in an hour with Ortho GroundClear Year Long Vegetation Killer. Treats up to 400 sq. ft.PRODUCT DETAILS:Ortho GroundClear Year Long Vegetation Killer with Comfort Wand kills weeds and prevents any re-growth for up to 1-year with a single application Fast-acting formula starts working immediately Starts to kill weeds and grasses in 1-hour Apply to driveways, sidewalks, gravel areas, rock and desert landscapes, under decks, on parking areas, and along fences and curbs For the best results, apply using the attached Comfort Wand when weeds are actively growing on sunny days when the temperature is above 60F