Kill weeds and grasses down to the root and prevent new growth with this refill bottle of RoundUp Extended Control Weed & Grass Killer Plus Weed Preventer II. This dual-action formula gives you visible results in three hours, and will prevent new growth for up to four months. Suitable for use on driveways, sidewalks, and patios; along fences, foundations, curbs, and retaining walls; and along the edge of lawns. Not for direct use on lawns. | RoundUp Ready-To-Use Extended Control Weed & Grass Killer Plus Weed Preventer II Refill | Size 1.25 gal