Use Hi Yield Super Concentrate KillzAll Weed & Grass Killer When You Want To Clear An Area Of All Green Growth In Order To Start A New Planting. Also, kills weeds and grasses that have sprouted in sidewalks, driveways and foundation plantings. Best used with a pump up sprayer and spreader sticker added. Stronger than the leading national brand. Active Ingredient: 41% Glyphosate. 1 Quart.