The dual-action formula of Roundup kills existing weeds and prevents new ones from growing for up to four months and it kills them down to the root, guaranteed! Plus, the Weed & Grass Killer can be used on driveways, sidewalks, patios, along fences, curbs, retaining walls, and edges of lawns, as well as on decorative rock or gravel areas.

• Simply add 6 fl. oz. of the concentrate to 1 gallon of water.
• Rainproof in 30 minutes and visible results in 6 hours.
• Available in 1 quart.