Shop Roundup 4-Month Weed Barrier & Mulch Kit: Roundup Dual Action + Scotts Nature Scapes Finish at Lowes.com

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Keep weeds away and your landscape looking pristine with the 4-Month Weed Barrier & Mulch Kit, a complete set designed to kill existing weeds, prevent regrowth for up to 4 months, and top it all off with a professional-quality mulch finish. Perfect For: -Low-maintenance landscaping Prepping mulch beds, walkways, and non-lawn areas -Seasonal cleanup or new garden installations

Dual Action Plus 4 Month Preventer 1 -Gallon Ready to Use Weed and Grass Killer

Nature Scapes Color Enhanced 1.5-cu ft Classic Black Blend Mulch

Dual Action Plus 4 Month Preventer Refill 1.25 -Gallon Refill Weed and Grass Killer

Roundup Dual Action Plus 4 Month Preventer 1 -Gallon Ready to Use Weed and Grass Killer

Root out the toughest weeds and grasses with Roundup® Dual Action Weed & Grass Killer Plus 4 Month Preventer with Sure Shot™ Wand. 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.

Kills existing weeds and grass down to the root & prevents new weeds from growing for up to 4 months
Rainproof in as fast as 30 minutes, and produces visible results in as fast as 6 hours
For use on hardscapes and landscapes
All ornamental bedding plants, trees, shrubs, sod, and seed can be planted 4 months after application
The innovative protective shield of the Sure Shot™ Wand allows you to use Roundup® Dual Action with confidence to target weeds in garden beds and landscaped areas

General
Series Name	Dual Action Plus 4 Month Preventer	Area of Use	Garden
Type	Weed and grass killer	Post-Emergent	Yes
Unit of Measure Quantity	1	Pre-Emergent	No
Unit of Measure	Gallon(s)	Pre & Post-Emergent	No
Application Method	Battery sprayer	Application Season	All season
Primary Usage	Weed and grass killer	Active Ingredient	Triclopyr, triethylamine salt 0.122%, Fluazifop-P-butyl 0.097%, Diquat dibromide 0.073%, Imazapic, ammonium salt 0.015%
Concentrated	No

Dimensions
Maximum Coverage Area (Sq. Feet)	300	Size	1-gallon

Features
Contains Glyphosate	No	Recommended for Crabgrass	Yes
Delivery System	Liquid	Recommended for Creeping Charlie	Yes
Duration of Effectiveness	30 days	Recommended for Dandelions	Yes
Lowe's Exclusive	No	Recommended for Dollar Weed	Yes
Natural	No	Recommended for Grassy Weeds	Yes
Odorless	Yes	Recommended for Moss	No
Organic	No	Recommended for Nutsedge	Yes
Rain Resistant	Yes	Recommended for Poison Ivy	Yes
Ready to Use	Yes	Recommended for Poison Oak	Yes
Recommended for Algae	No	Recommended for Spurge	Yes
Recommended for All Broadleaf Weeds	Yes	Recommended for Vines	Yes
Recommended for Chickweed	Yes	Visible Results	3 hours
Recommended for Clover	Yes

Certifications
CA Residents: Prop 65 Warning(s)	No	OMRI Listed	No
EPA Registration Number	71995-66

Warranty
Warranty	None

Compatibility
For Use in Flower Beds	Yes	For Use Around Trees	Yes
For Use in Vegetable Gardens	No	For Use Along Fences	Yes

Miscellaneous
UNSPSC	10171700

Review

4.4 out of 5

1350 Reviews

83% Recommend this product

Ratings may include incentivized customer reviews.

+ 215 images

What Customers Are Saying

Customers overwhelmingly praise this weed killer for fast, reliable results, with most noting it kills weeds within days and eliminates them at the root level. Many highlight its ability to prevent regrowth for months, particularly in challenging areas like rock beds and driveway cracks. Reviewers consistently emphasize ease of use, praising the simple sprayer design and refillable containers that require no mixing. The durable, well-engineered packaging is frequently noted as convenient for storage and handling. A few mention concerns about odor and caution regarding children and pets, though these represent a small fraction of feedback. Overall, most customers consider it highly effective and worth using.

Customer review summary generated by AI, including incentivized reviews.

1350 Customer Reviews

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Effective at controlling weeds.

Would Recommend

Easy to use and mix; goes a long way; really works to kill and prevent weeds. Just follow directions, use gloves and common sense. Will kill your good plants if used carelessly.

TC994aMay 4, 2026
From Dual Action Plus 4 Month Preventer Concentrate 32 -fl oz Concentrate Weed and Grass Killer Verified Purchaser

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It works

Would Recommend

This product did just what I was hoping it would do! I tried another product but I think this one is much better. I definitely would recommend this.

SunshineMay 7, 2026
Verified Purchaser

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Works as promised

Would Recommend

I love thst this product works for such a long oeriod of time. It usually means i only need to spray 2 times per growing season.

PeanutMay 3, 2026
Verified Purchaser

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Safe to use

Would Recommend

We use this at our beach house. Helps eliminate weeds without harming the shrubs. Fast and effective.

NJfromPAMay 4, 2026
Verified Purchaser

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Spray and go

Would Recommend

I liked it just find it worked as its supposed to and the fsct i got it on sale helped me out.

JJB1May 2, 2026
Verified Purchaser

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Weeds be gone

Would Recommend

Didn’t realize this was battery operated when I purchased it. Nice feature.

NickyMay 6, 2026
Verified Purchaser

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Great bang for your buck

I like that this product is reliable and consistent

JulieMay 3, 2026
Verified Purchaser

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Like the product

Would Recommend

With the shield on the wand it goes were you want it.

David TMay 2, 2026
From Dual Action Plus 4 Month Preventer Refill 1.25 -Gallon Refill Weed and Grass Killer Verified Purchaser

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get what you pay for

Would Not Recommend

this product was only a couple dollars more than the regular roundup, and will keep me from having to rebuy and reapply for the next few months. Seems obvious this is a win=win.

betthyApril 26, 2026
Verified Purchaser

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Awesome product

Would Recommend

Starts to work on the same day when its hot out or within a couple days when its cooler out. My weeds got out of control over my summer deployment and this took everything back.

Tom1April 25, 2026
From Dual Action Plus 4 Month Preventer Refill 1.25 -Gallon Refill Weed and Grass Killer Verified Purchaser

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Roundup 4-Month Weed Barrier & Mulch Kit: Roundup Dual Action + Scotts Nature Scapes Finish

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