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Roundup

1-Gallon Dual Action Weed And Grass Killer

Mfg.#
5324504
Sku#
3076684
  • RoundupĀ® 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
  • This weed killer and preventer is rainproof in as fast as 30 minutes, and produces visible results in as fast as 6 hours
  • Apply this herbicide to hardscapes and landscapes - 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
  • All ornamental bedding plants, trees, shrubs, sod, and seed can be planted 4 months after application
  • Pull tubing out of RoundupĀ® Dual Action, connect hose, adjust nozzle, and spray weeds (to prevent new weeds and grasses from growing, you must spray the entire area you want to control, not just the emerged weeds)

* Estimated stock levels as of Sun, May 3, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.

Description

Root out the toughest weeds and grasses with Roundup® Dual Action Weed & Grass Killer Plus 4 Month Preventer. This formula kills existing weeds and grass down to the root, and prevents new weeds from growing for up to 4 months by creating an invisible barrier in the soil. Apply only where you want to kill existing weeds AND prevent future weed growth for up to 4 months, such as 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. In order to prevent new weeds and grasses from growing, you must spray the entire area you want to control, not just the emerged weeds. For best results, apply during warm, sunny weather above 60°F. Rain or watering 30 minutes after application will NOT wash away effectiveness. After application, weeds will begin to yellow and wilt within hours with complete kill in 1 to 2 weeks. All ornamental bedding plants (annuals and perennials), trees, shrubs, sod and seed can be planted 4 months after application. Roundup® Dual Action covers up to 300 sq. ft.

 

How to Assemble

  • Remove sprayer. Pull cord/tubing all the way out.
  • Insert plug into knob opening on cap.
  • Flip up spout or turn knob ON. Adjust nozzle to the desired spray setting. Flip up spout must remain up while spraying.


How to Apply

  • Adjust nozzle to the desired spray setting.
  • Spray the weeds or grasses you want to kill until thoroughly wet.
  • When spraying around the base of well-established (at least 6 months old) ornamental plants, shrubs or trees, shield plants from drift with a sheet of cardboard or plastic.
  • If desirable plants are sprayed accidentally, rinse off immediately with water.

Where Not to Use

  • Do NOT Spray...
  • Plants or grasses you like – they will die.
  • Landscaped areas around young plants or in areas that will be planted or seeded within 4 months.
  • In lawns or for lawn renovation as this product prevents desirable grasses from growing too.
  • For vegetable garden preparation or in and around fruits and vegetables.
  • Next to a fence if desirable plants and grasses are growing on the other side.


Where to Use

  • Apply only where you want to kill existing weeds AND prevent future weed growth for up to 4 months, such as:
  • On cracks and crevices in driveways, sidewalks, walkways and patios
  • Along fences, foundations, retaining walls, and curbs
  • In mulched beds or around the base of well-established (at least 6 months old) desirable plants, shrubs or trees
  • Gravel areas
  • On parking areas and under decks


When to Apply

  • For best results, apply during warm, sunny weather above 60°F. Spray when air is calm to prevent drift to desirable plants.


How Often to Apply

  • Wait at least 2-3 months before spraying a previously treated area.

Watering Tips

  • RAINPROOF: rain or watering 30 minutes after application will NOT wash away effectiveness.

Disposal Methods

  • If empty: place in trash or offer for recycling, if available.
  • If partly filled: call your local solid waste agency for disposal instructions. Never place unused product down any indoor or outdoor drain.

See package for extended warnings, directions, environmental impact, first aid, and/or storage & disposal information prior use.

Specifications

General

Application Method Spray
Composition Triclopyr, Triethylamine Salt, Fluazifop-P-Butyl, Diquat Dibromide, Imazapic, Ammonium Salt
Coverage 400 sq ft
Type Weed & Grass Killer
Usage Location Driveway & patio

Manufacturing Details
The following information is subject to change without notice

Country of Origin USA
Prop 65 Warning Warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.
Shop USA Yes

Dimensions

Size 1 gal

Label Information

Precautionary Statement CAUTION: Keep out of reach of children. Hazard to humans and domestic animals. May cause eye irritation. Avoid contact with eyes, skin, or clothing. Prolonged or frequently repeated skin contact may cause allergic reactions in some individuals. Wear long-sleeved shirt and long pants, shoes plus socks and gloves. Wash thoroughly with soap and water after handling and before eating, drinking, chewing gum, using tobacco, or using the toilet. Remove and wash contaminated clothing before reuse. Such items should be kept and washed separately from other laundry.

Related Documents

Brochure (PDF)

Msds (PDF)

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