Hi-Yield Killzall Weed & Grass Killer kills weeds down to the roots! Killzall Weed & Grass Killer is a non-selective weed and grass killer - so it's perfect for killing off tough-to-remove weeds and grasses before lawn re-seeding. It's also formulated for spot treatment of individual weeds and grasses. Use near fences, on paths, patios, curbs, sidewalks, driveways, around trees, shrubs, flower beds, and buildings. Ultra formula with surfactant dries on fast. Killzall Weed & Grass Killer is rainfast in as little as two hours. Because Killzall is a non-selective weed control, it's important to keep it off desirable plants, grasses, and vegetation. 16 oz. super concentrated formula.