Roundup Dual Action Weed & Grass Killer Plus 4 Month Preventer Refill
Roundup Dual Action Weed & Grass Killer Plus 4 Month Preventer Refill
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Roundup Dual Action Weed & Grass Killer Plus 4 Month Preventer Refill

755 ratings

Key item features

  • Effective Weed Control: Roundup Dual Action Weed & Grass Killer Plus 4 Month Preventer kills existing weeds and grass down to the root and prevents new weeds from growing for up to 4 months.
  • Quick Results: Produces visible results in as fast as 6 hours and is rainproof in just 30 minutes.
  • Versatile Application: Ideal for use on hardscapes and landscapes, including driveways, sidewalks, patios, fences, mulched beds, and gravel areas.
  • Long-Lasting Protection: Creates an invisible barrier in the soil to prevent new weed growth for up to 4 months.
  • Planting Flexibility: All ornamental bedding plants, trees, shrubs, sod, and seed can be planted 4 months after application.
  • Easy Refill: Roundup Dual Action Refill is an economical way to refill any Roundup Dual Action Ready-to-Use applicator.
  • Coverage Area: One refill covers up to 375 sq. ft., ensuring extensive weed control for larger areas.
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Customer ratings & reviews

4.6 out of 5 stars
stars
755 ratings423 reviews
How item rating is calculated
  1. 5 stars77% (584)
  2. 4 stars12% (93)
  3. 3 stars4% (29)
  4. 2 stars2% (15)
  5. 1 star5% (34)

Reviews summary

Pros

  • : Simple to use with minimal effort.
  • : Kills weeds for several months with a single application.
  • : Directions are simple and straightforward.
  • : Kills weeds and grass in driveway cracks and edges.
  • : Offers a large amount of product at a reasonable cost.

Neutral

  • : Can be mild, but also strong and pungent.
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Showing 1-3 of 423 reviews

Oct 15, 2026
Reviewer name: Leighann
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Works for months

This is the best Roundup product. It worked well and lasted for months. I used it on my gravel driveway. Much better than other offerings from Roundup.

Helpful?2MMNFUEFGK521786229173
Oct 7, 2026
Reviewer name: Deb
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Works great!

Helpful?2MMNFUEFGK521786229173
Oct 4, 2026
Reviewer name: CBvitamin
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Grass killer

Love it, the grass dies within hours

Helpful?2MMNFUEFGK521786229173
Current price is $24.9215.6 ¢/fl oz
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