Ortho GroundClear Vegetation Killer Ready-To-Use is specially formulated to help get rid of unwanted weeds and grasses on desired areas. This ready-to-use spray works two ways: by killing vegetation down to the root, and by preventing new growth for at least one year. It features a fast-acting and rain-proof formula which guarantees visible result within a few hours after application. It helps keep weeds away on patios, driveways, sidewalks, along fences and curbs, and other hard surfaces. This 1.25 gallon bottle with a sprinkler cap and can treat up to 75 sq. ft.