Pre-emergent & post-emergent weed & grass control. Kills and prevents listed weeds and grasses for up to 3 months. Apply only where no vegetation is desired; established grassy and broadleaf weeds and weed prone areas, where weeds have not yet emerged. These areas include driveways, sidewalks, walkways, fences, landscapes areas, etc. Visible effects should occur within 3 to 5 days with complete kill in 2 to 4 weeks. Dual action formula. Starts working in hours. Do not use on lawns. Active ingredient: Glyphosate.