Weed Warrior Herbicide Concentrate Starter (2-pack)

Name: Weed Warrior Herbicide Concentrate Starter (2-pack)
Brand: Sunday
SKU: SBA2035
Price: 37.80 USD
Availability: InStock
Rating: 4.3 (71 reviews)

$37.80 $54

2 - 27 oz. concentrate bottle + reusable pouch + wand sprayer Covers up to 448 sq. ft.

71 reviews

SAVE $16.20

Weed Warrior weed control concentrate 27 oz and 1 gallon sprayer

Weed Warrior Concentrate back of package image

Organic weed and grass killer starter 2-pack

Organic weed and grass killer concentrates, reusable pouch and sprayer made to kill any weed.

Free shipping! Ships in 1-2 business days

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Double the weed-killing power with more coverage

Get twice the weed-fighting power with this value 2-pack! Our fast-acting, non-selective organic formula and premium sprayer kills stubborn populations of weeds, mosses, algae, and grasses - that's right - grasses. With double the concentrate for larger areas or multiple applications, it's ideal for use in garden beds, near patios, along sidewalks, in mulched areas, and more.

Effective against bluegrass, chickweed, crabgrass, corn spurry, dandelion, groundsel, lambsquarters, mouse-eared chickweed, mustards, plantain, redroot pigweed, round leaved mallow, sheep sorrel, shepherd’s-purse, stinkweed, thistle, moss, algae, and lichens.

FEATURES

Weed and grass killer herbicide pack
Kills grasses, weeds, mosses and algae
OMRI-listed herbicidal soap
Fast-acting organic formula
See results in 20 minutes!
Non-staining
Ideal for gardens, mulch, patios, and sidewalks
Treats up to 448 sq. ft. - double the coverage!

WHAT’S INCLUDED

2 27 oz. herbicidal soap concentrate
1 Reusable, easy-fill gallon pouch
1 Powerhouse™ battery-powered wand sprayer

INSTRUCTIONS

For best results, apply between 50-85 degrees F when no rain is expected for 3+ hours

Pour one full bottle of Weed Warrior concentrate into the reusable pouch and attach the wand sprayer
Use your outside hose to fill the sprayer up to the 1-gallon mark, reattach the lid of the reusable pouch and shake well
Apply to unwanted weeds in rocks, concrete, and other hard surfaces. Use with care on weeds in your lawn.
Repeat treatment in 3-4 weeks, or as needed.

Helpful Tips from Lawn Advisors:

How does weed and grass killer work?

Weed Warrior is a powerful herbicidal soap made from fatty acids, it eats away at the waxy coating that protects most green leafy growth from the elements.

Concentrates have a shelf life of ~2 years. After the initial mixing, mix well again if it sits for 30+ days.

Can I use weed and grass killer on my lawn?

Weed Warrior is non-selective, meaning it will kill any unwanted vegetation - weeds and grass. We recommend using it in gardens, sidewalks, mulch and other hardscapes rather than within your lawn.

If you use Weed Warrior within your lawn, repair bare patches with Sunday grass seed or Bare Repair.

How to use Weed Warrior with other Sunday products?

You can apply weed killer, like Weed Warrior, before or after lawn fertilizer.

Allow weed control products to dry completely before applying any other Sunday liquid products or watering your lawn–the longer the plant absorbs the weed control, the more effective the application.

When will I see results?

Fully drenched weeds will dry up in as little as 20 minutes or up to 24 hours, depending on the size and maturity of the plant you are spraying.

Are there any US states where this is not approved for use?

This product is approved for use in all states.

Weed Warrior Concentrate MSDS

Weed Warrior Concentrate Label

Weed Warrior Concentrate herbicide application to weeds in concrete

Weed Warrior Concentrate Instructions

Ready to kill weeds, grasses, and moss in just 20 minutes? Learn how to assemble your concentrate kit, how to apply it, and get best practices to control weeds in your yard.

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Customer reviews

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Fred

Verified Buyer

LocationGig Harbor, WA

Weed Warrior Recommendation

I've used Weed Warrior on my toughest weed (purple violet) and on persistent weeds that grow in the cracks of our driveway. Within hours, the weeds are dead and so is my grass (the label clearly states it will kill grass too). Patching the small amount of grass is worth it to get rid of the purple v...

Published date

08/03/21

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Jeremy

Verified Buyer

LocationLos Angeles

This stuff WORKS!

I love my Sunday weed warrior! I like that the weed killer works and doesn't kill my grass. Plus I don't have to worry about harmful chemicals and feel good letting my dog/neighbor kids run around on the grass after it's dry. Sunday fan for life!

Published date

07/14/21

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Erica

Verified Reviewer

LocationBoston, MA

Weed warrior kills weeds

I think this stuff works great. My weeds were awful this spring and I wish I tried this sooner. If it isn’t working for you, I think you might not be following the instructions. Make sure you’re shooting the leaves and not going for the roots. I think the sun also plays a role in the success. Th...

Published date

07/29/25

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William

LocationLongmont, Colorado

This stuff works FAST!

I don’t know what any of these people are talking about who say this stuff doesn’t work. I sprayed this on crab grass and weeds and everything. It’s all dead in less than 12 hours.

Published date

06/27/25

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Todd N.

LocationLittleton, Colorado

Great for dandelions

My experience is that it works great for dandelions but doesn’t do anything for other weeds.

Published date

05/18/25

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Rachel

Did nothing

I went through 2 containers across various spots of my yard, on all kinds of different weeds, and nothing happened.

Store Owner

Hi Rachel, we're sorry to hear that this was your experience! Our team would love to take a look at your weeds and make sure Weed Warrior is the right option to treat them. You can reach them at [email protected] or by calling 415-903-6932.

Published date

05/13/25

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Scott w.

Verified Reviewer

LocationWarwick ri

So much crab grass

Weed warrior did nothing for me. I have so much crabgrass. I have never had this much. Will not be renewing Sunday this had not been a good experience.

Store Owner

We're sorry to hear that your weed control results aren't as expected! Here are some Best Practices to follow for best results. 1.) Try to apply on a sunny day. While not mandatory, sunshine will improve the efficacy and speed of our herbicides. With sunshine unfiltered by clouds, our herbicides will work even better. A rainfall within 3 hours after application can make the herbicides ineffective. Optimal temperatures for application are between 50F to 85F. 2.) Apply when the weeds look healthy. When weeds are stressed or injured, weeds release hormones to recover. These hormones make herbicides less effective. Hormones are also released if weeds are mowed; we recommend not applying on the same day you mow. 3.) Apply the leaves liberally. Our herbicides just need to make contact with the leaves to work; trying to apply to the roots won't be effective. For best results, you want the leaves soaked, but not to the point where the herbicides is dripping off the leaves. 4.) Know the age of the weed. Older and established weeds will likely require more applications. For older weeds, we recommend doing multiple applications on the same day; just let the leaves dry out in-between applications.

Published date

07/27/24

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Jenn

Verified Reviewer

LocationFremont, Wi

Amazing

The 2024 spring season in Wisconsin met us with a lot of rain. Between juggling work/ family/ animal needs we just could not stay on top of the weeds in our many flower beds. We have dogs, chickens, outdoor koi and two bee hives on our land- so having something "safer" was necessary. We tried the da...

Published date

06/07/24

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Bastul

Verified Reviewer

LocationTulsa, Oklahoma

No impact at all

Sprayed this product on weeds and no impact. My initial thought was rains the next day impacted the application so used a second round on a hot day with no rain. Again, absolutely no impact on any of the weeds sprayed. Very dissatisfied with this product.

Store Owner

Published date

05/22/24

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Neeci

Verified Reviewer

LocationSearcy, AR

Bye bye grass in flowerbeds

So the new flowerbed had some Bermuda grass coming up through the weed guard paper, not any more. I watched it get wilty within 30 minutes when I went to check on it. I pulled the dead grass the next morning. Other weeds I hit in the flowerbed where much easier to pull then weeds I didn’t hit with w...

Published date

05/11/24

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