Roundup Dual Action Weed and Grass Killer Concentrate delivers a glyphosate-free formula that kills existing weeds and prevents new growth for up to 4 months. This 32-ounce concentrate mixes with water and covers a large treatment area, making it an economical choice for bigger projects. Works on driveways, patios, sidewalks, and gravel areas. Rainproof in 30 minutes and visible results in 12 hours.

• Kills and prevents weeds for up to 4 months
• Glyphosate-free formula with 4 active ingredients
• 32 oz concentrate - mix with water for coverage
• Rainproof in 30 minutes
• Visible results in 12 hours
• For use on driveways, patios, sidewalks, and gravel
• Not for use on lawns or garden beds