The herbicide provides fast-acting control of weeds, grass, mosses, & algae within hours. Captain Jack's Deadweed Brew is great for use on visible weeds within vegetable & flower gardens, landscaped areas, & lawns. It can also be used on visible weeds around & on buildings, sidewalks, fences, bark mulch, driveways, patios, & gravel. Approved for organic gardening. | Bonide Ready-to-Use Captain Jack's Deadweed Brew Weeds and Grasses Spray | Size 1 qt