Pre-order 2026 plans and save 20%!

Code: FALL20

Weed Warrior Herbicide Concentrate Refill (2-pack)

$35.20 $44

2 -27 oz. concentrate bottle Covers up to 448 sq. ft.

SAVE $8.80

Weed Warrior weed control concentrate 27 ozWeed Warrior Concentrate back of package imageWeed Warrior Weed & Grass Killer Data SheetWeed Warrior Weed & Grass Killer Data SheetWeed Warrior Weed & Grass Killer Data Sheet

Organic weed and grass killer concentrate value refill

Double the value and power of fast-acting organic herbicidal soap refills for your existing Weed Warrior sprayer system.

Shipping box

Free shipping! Ships in 1-2 business days

$35.20$44

My Yard Plan

Wondering what your lawn really needs?

Let's create a custom plan for you.

sunday-guarantee-badge

We're committed to making sure Sunday works for you and your home. Need a replacement? Or help troubleshooting an issue? Our experts are here for you. Learn more

Expert-approved essentials

SAVE $8.80

Weed Warrior weed control concentrate 27 ozWeed Warrior Concentrate back of package imageWeed Warrior Weed & Grass Killer Data SheetWeed Warrior Weed & Grass Killer Data SheetWeed Warrior Weed & Grass Killer Data Sheet

Weed & grass killer for days

Keep your Weed Warrior starter system ready for a full season of weed management.

This value 2-pack of our concentrated herbicidal soap formula gives you double the coverage for ongoing weed & grass control. Designed for your existing Sunday pouch and wand sprayer, each bottle lets you treat up to 224 sq. ft. Our fast-acting, non-selective concentrate kills stubborn populations of weeds, mosses, algae, and grasses in as little as 20 minutes. Perfect for larger areas or maintaining weed control in garden beds, near patios, along sidewalks, and mulched areas.

PRODUCT FEATURES

  • Two organic herbicidal soap concentrate refills
  • Kills all vegetation including weeds and grasses
  • OMRI-listed for organic gardening
  • See results in as little as 20 minutes
  • Non-staining formula
  • Non-selective - use carefully around desired plants
  • For use with Weed Warrior starter kits
  • Treats up to 448 sq. ft.

WHAT'S INCLUDED

Two 27 oz. bottles of herbicidal soap concentrate. Designed as a refill for your existing Sunday Weed Warrior starter kits.

INSTRUCTIONS

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

  1. Pour one full bottle of Weed Warrior into your reusable Sunday pouch and attach the sprayer
  2. Use your outside hose to fill the pouch up to the 1-gallon mark
  3. Secure the cap of the reusable pouch and shake well
  4. Spray onto unwanted vegetation until leaves are entirely covered
  5. Repeat treatment in 2-3 weeks for best results

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, causing rapid desiccation and plant death.

What vegetation does Weed Warrior control?

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.

Do I need the Weed Warrior Starter Pack to use this product?

Yes, this is a refill concentrate only. You'll need the sprayer and pouch that come with the Weed Warrior Starter Pack or Starter 2-Pack to apply this product.

How many applications will I get from this 2-pack?

Each bottle treats up to 224 sq. ft., so the 2-pack provides enough concentrate for two separate applications at this coverage, or one application over a larger 448 sq. ft. area.

Can I use weed and grass killer on my lawn?

Weed Warrior is non-selective, meaning it will kill any vegetation it contacts - including 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 it with Sunday Grass Seed or Bare Repair (https://www.getsunday.com/shop/category/lawn-care/grass-seed).

How long does concentrate last?

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

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

This product is approved for use in all states.

Trending items

SAVE $18

Sunday Ultimate Weeding Kit includes: Dandelion Doom Herbicide Concentrate Refill, Weed Warrior Herbicide Concentrate Refill , Sunday Herbicide Pouch, Wand Sprayer, Weed Warrior Herbicide Spot Treatment, Dandelion Doom 32oz capped, and Trigger SprayerSunday Ultimate Weeding Kit includes: Dandelion Doom Herbicide Concentrate Refill, Weed Warrior Herbicide Concentrate Refill , Sunday Herbicide Pouch, Wand Sprayer, Weed Warrior Herbicide Spot Treatment, Dandelion Doom 32oz capped, and Trigger Sprayer

Sunday Ultimate Weeding Kit

$68 $86

starstarstarstarstar

(49)

Shipping box

Free Shipping!

Sunday Nix Ticks flea and tick control yard spraySunday Nix Ticks flea and tick control yard spray

Nix Ticks Bug Control Spray

$27

starstarstarstarstar

(284)

Shipping box

Free Shipping!

DeWit Forged Hand TrowelDeWit Forged Hand Trowel

DeWit Forged Hand Trowel

$29

Shipping box

Free Shipping!

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.

Read article

Customer reviews

Based on 72 reviews!
Popular topics
Show more
Kathryn
Verified Buyer
LocationBoston MA
Kills weed quickly without damaging

Kills weed quickly without damaging the grass or flowers. Very pleased with the results.

Published date
08/19/21
Was this review helpful?
0
1
Joe
Verified Buyer
LocationEden Prairie MN
Hard to really tell since

Hard to really tell since this year was tough. It was my worse year for weeds.

Published date
08/19/21
Was this review helpful?
0
0
Todd R.
Verified Buyer
LocationChicago, IL
I like the idea of

I like the idea of less chemicals and more natural ingredients. Unfortunately, this just does not do the job. I will stick with the fertilizers, but continue to use the top name brands for weed killers.

Published date
08/19/21
Was this review helpful?
0
0
Amber O.
Verified Buyer
LocationKent, CT
Fit for purpose

I have a gravel driveway that was swimming in weeds. I tried vinegar on them, but it made only a tiny dent in the problem. This works so much better. In combination with a Dutch hoe, the driveway is finally clear. Don’t expect Roundup like results, but I’m trying to stay away from that stuff. Also...

Published date
08/03/21
Was this review helpful?
6
2
Dave
Verified Buyer
LocationSouthern Pines, NC
Works great and can see

Works great and can see results in a matter of Hours.

Published date
08/03/21
Was this review helpful?
0
0
James
Verified Buyer
LocationColumbia, MO
Weed Warrior.....

Weed Warrior is marginally effective at best in my experience. It does not work on all weeds and is not a permanent fix.

Published date
07/15/21
Was this review helpful?
0
0
Valerie
Verified Buyer
LocationTampa Florida
Does kill the weeds but

Does kill the weeds but be careful it doesn’t discriminate between your grass and weeds. I spot treated and then pulled up weeds. Since using Sunday my lawn has improved. It still has a long way to go and that’s because it was never taken care of. Sunday makes lawn care easy. I stood in Lowe’s for h...

Published date
07/14/21
Was this review helpful?
4
1
Rose G.
Verified Buyer
LocationHouston area TX
Weed Warrior

Weed control was as expected, lawn is starting to green up and look decent. Good product

Published date
07/14/21
Was this review helpful?
0
0
Susan
Verified Buyer
LocationFlower Mound, Texas
Works great, but leaky sprayer

Great spot treatment for killing weeds, including crabgrass. I originally got the sprayer version. Got tired of the sprayer leaking all over my hand. I switched to concentrate and my own spray bottle.

Published date
07/14/21
Was this review helpful?
0
0
Bob
Verified Buyer
LocationLubbock Tx
Works as advertised and very

Works as advertised and very easy to use.

Published date
07/14/21
Was this review helpful?
0
0

$35.20$44