ORTHO GroundClear Year Long Vegetation Killer1 - Up to 1 Year of Weed and Grass Control, 2 gal.Brand: Ortho Color: Concentrate Features: Ortho GroundClear Year Long Vegetation Killer1 is a concentrate formula that 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 3 hours Kills tough weeds to the root when used as directed Apply with a tank sprayer to driveways, sidewalks, gravel areas, rock and desert landscapes, under decks, on