Hi-Yield Killzall Weed & Grass Killer is our preferred product for removing weeds and grasses before re-seeding your lawn. Killzall Weed & Grass Killer is 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. 1 gallon (128 fl. oz.) super concentrated formula.