Roundup® Dual Action Weed & Grass Killer Plus 4 Month Preventer Refill kills existing weeds and grass down to the root and prevents new weeds from growing for up to 4 months. Rainproof in as fast as 30 minutes, with visible results in as fast as 6 hours.

• Dual action formula kills existing weeds & grass down to the root
• Prevents new weeds from growing for up to 4 months by creating an invisible barrier
• Apply to hardscapes and landscapes — driveways, sidewalks, patios, fences, mulched beds, gravel areas, and around well-established shrubs or trees
• All ornamental bedding plants, trees, shrubs, sod, and seed can be planted 4 months after application
• Refill size: easy and economical way to refill any Roundup® Dual Action Ready-to-Use applicator
• Active Ingredients: Triclopyr, Triethylamine Salt, Fluazifop-P-Butyl, Diquat Dibromide, Imazapic, Ammonium Salt
• Net Content: 1.25 Gallon | Application Method: Spray