Roundup's dual-action Ready-to-Use Formula for Extended Weed Control and Herbicide Plus Weed Preventative II kills existing weeds and prevents new ones from growing for up to four months, and kills them for up to 'at the root, guaranteed.

Additionally, Roundup Extended Control can be used on driveways, sidewalks, patios, along fences, curbs, retaining walls and lawn edges, as well as areas of decorative rock or gravel. Rainproof in 10 minutes with visible results in 3 hours, Roundup is effective.