Roundup Dual Action Weed & Grass Killer Plus 4 Month Preventer with Pump N Go Sprayer

Roundup Dual Action Weed & Grass Killer Plus 4 Month Preventer with Pump 'N Go delivers two functions in one ready-to-use formula: it eliminates existing weeds and grasses down to the root, and it creates an invisible soil barrier that helps prevent new growth for up to four months. This combination supports cleaner pathways, borders, and landscape edges with fewer interruptions from new weeds.

Designed for hardscapes and landscapes, this solution works on cracks and crevices in driveways, sidewalks, and patios, along fences, in mulched beds, or around the base of well-established desirable plants, shrubs, or trees, and on gravel areas. To maximize results, spray the entire area you want to control — not just the visible weeds — and apply under warm, sunny weather (60°F+). Rain or watering within 30 minutes after application does not wash away effectiveness, giving you flexibility in outdoor schedules.

Key benefits and usage scenarios

• Kills existing weeds and grasses down to the root for strong, long-lasting results.
• Prevents new weed growth for up to four months with a continuous soil barrier.
• Rainproof in as fast as 30 minutes and visible results can appear in about 6 hours.
• Suitable for hardscapes and landscapes — cracks, crevices, fences, mulched beds, and around established plants.
• Cover up to 300 sq ft per application to manage larger areas efficiently.

To expand your outdoor maintenance plan, use the Pump 'N Go 2 Sprayer with its extendable wand for reach and precision. Remember, for the preventive effect to work, you must spray the entire targeted area, not just the emerged weeds.

What to expect after application

• Weeds begin to yellow and wilt within hours, with complete kill typically in 1–2 weeks.
• Ornamental bedding plants, trees, shrubs, sod, and seed can be planted four months after application.
• Coverage is up to 300 sq ft per treatment, making it suitable for moderate to larger spaces.

In real-world use, homeowners often find it helpful for keeping driveways and paths clean, maintaining tidy borders, and reducing future weed pressure in mulched or gravel areas. The balance of immediate action and longer-term prevention offers flexibility for seasonal maintenance or targeted spot treatments, without making guarantees about every weed type or climate.