Weed Warrior Herbicide Concentrate Refill (2-pack)
$22 $44
2 -27 oz. concentrate bottle Covers up to 448 sq. ft.
BOGO-50% off
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.
Free shipping! Ships in 1-2 business days
Wondering what your lawn really needs?
Let's create a custom plan for you.
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
BOGO-50% off
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:
- Pour one full bottle of Weed Warrior into your reusable Sunday pouch and attach the sprayer
- Use your outside hose to fill the pouch up to the 1-gallon mark
- Secure the cap of the reusable pouch and shake well
- Spray onto unwanted vegetation until leaves are entirely covered
- 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

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 articleCustomer reviews
Your question will appear on the site once someone answers it.
- REVIEWS
- QUESTIONS
- All
- 5.0 star rating
- 4.0 star rating
- 3.0 star rating
- 2.0 star rating
- 1.0 star rating
eed control.
Fred Read LessRead less about review stating Weed Warrior Recommendation




ger weeds. We ordered weed warrior and after just one application we are so pleased. Now, I sprayed around 7 in the evening when it was about 70 degrees outside. Ideally the warmer weather and sun is recommended. At 7, most of the honey bees are in the hive for the evening and our dogs/ chickens could also be removed from the outside. About an hour after applying we could see some weeds looking a bit brown/ dark purple. In the morning it was very visible where we sprayed and could see the weeds looking unhealthy. After the sun came out for the day and about 24 hours after the first spray weeds were brown, dried up and dead/dying. A few weeds that have pokers on them I will respray before I pull them (for good measure) but overall the weeds are dead. If the product works this well when applied in less than ideal conditions I can't wait to see how they respond when applied in full sun and warmer temps. The sprayer bag is super easy to fill, use and no pumping of the sprayer. A lot of thought clearly went into this product. I give it five stars and Sunday, you have a client for life. Read LessRead less about review stating Amazing
other previous weed killers I have used. Now my flowerbeds can stay grass and weed free. Now to see what happens to the yard over the year. Read LessRead less about review stating Bye bye grass in flowerbeds
Sunday said it was quick - it was faster than that!
Don’t expect Roundup like results, but I’m trying to stay away from that stuff. Also like that the soap doesn’t have long ter...Read MoreRead more about review stating Fit for purpose
m effects on the soil like the salts you see in other homemade or eco friendly recipes. Read LessRead less about review stating Fit for purpose
Sunday took all that guess work away and probably saved me $100s. Read LessRead less about review stating Does kill the weeds but
Reseeded parts of my lawn and sprayed my strong grass. I am the talk of my neighborhood, they love the lush green grass
Pollinator Safety Guidance:
- Always read the entire label/instructions, follow instructions precisely, and adhere to pollinator safety guidance provided.
- When applying our fertilizers, be sure to spray on turfgrass only and avoid flowerbeds and gardens.
- Remove or mow flowering weeds before spraying with any Sunday products.
- Be sure to apply weed control and pest control products when most pollinators are least active (early morning/sunset are best).
Related Products
A portion of every purchase goes to restoring
tallgrass prairie through 1% for the planet.