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Dandelion Doom Herbicide Concentrate Refill (2-pack)

$22 $44

2 -5 oz. concentrate bottle

50% Off!

Dandelion Doom weed control concentrate 5 ozWoman applying Dandelion Doom Weed Killer using Sunday gallon pouch and sprayerdata sheetdata sheetdata sheet

Mini bottles, major results

Double the value and coverage of iron-powered selective weed killer refills for your existing Dandelion Doom sprayer system.

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$22$44

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Dandelion Doom weed control concentrate 5 ozWoman applying Dandelion Doom Weed Killer using Sunday gallon pouch and sprayerdata sheetdata sheetdata sheet

More refills, more weed control

Keep your Dandelion Doom starter system ready for a full season of weed management.

This value 2-pack of our concentrated iron-based formula gives you double the coverage for ongoing weed control. Designed for your existing Sunday herbicide pouch and wand sprayer, each bottle lets you treat up to 224 sq. ft. The powerful iron (FeHEDTA) formula targets broadleaf weeds, moss, and lawn diseases while leaving your grass unharmed. Perfect for larger properties or maintaining weed control throughout the growing season.

PRODUCT FEATURES

  • Two lawn-safe weed killer concentrate refills
  • Kills broadleaf weeds, mosses, and algae in lawns
  • Suppresses select lawn diseases
  • Iron (FeHEDTA) nutrient formula
  • Fast acting—results within hours
  • Kills weeds down to the root
  • For use with Dandelion Doom starter kits
  • Treats up to 448 sq. ft. total

WHAT'S INCLUDED

Two 5 oz. bottles of iron chelated (FeHEDTA) concentrate weed killer. Designed as refills for your existing Sunday Dandelion Doom 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 Dandelion Doom 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 weeds in your lawn until leaves are entirely covered
  5. Repeat treatment in 3-4 weeks for best results

Helpful Tips from Lawn Advisors:

How does this lawn-safe weed killer work?

Grass and weeds absorb iron differently. Weeds quickly take in too much iron, which becomes toxic and kills them. Grass absorbs iron more slowly and can tolerate higher amounts.

What weeds does Dandelion Doom control?

Dandelion Doom is effective on broadleaf weeds like black medic*, broadleaf plantain, bull thistle, Canada thistle*, common chickweed*, creeping buttercup, creeping charlie/ground ivy*, dandelion, dovefoot geranium*, English daisy*, false dandelion, healall*, moss, liverworts*, algae* and lichens*, narrow-leaved plantain*, oxalis, Persian Speedwell, prostrate knotweed*, shepherd’s-purse*, silverweed cinquefoil*, slender speedwell*, white clover, wild chamomile*.

It can also control or suppress diseases such as but not limited to*: Dollar Spot, Rust or Snow Mold.

*Not approved for this use in California. Please see CA label for all approved use.

Do I need the Dandelion Doom Starter Pack to use this product?

Yes, these are refill concentrates only. You'll need the sprayer and pouch that come with the Dandelion Doom 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. of lawn area, so the 2-pack provides enough concentrate for two separate applications at this coverage, or one application over a larger 448 sq. ft. area.

How to use Dandelion Doom with other Sunday products?

You can apply Dandelion Doom before or after lawn fertilizer. Allow weed control products to dry completely before applying other liquid products or watering your lawn–the longer the weed control absorbs, the more effective the application.

Does Dandelion Doom stain?

It can cause staining due to high iron formula. Avoid using on sidewalks or hard surfaces. If you spill, immediately rinse the area. For best results, mix over lawn or landscape

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

This product is approved for use in all states.

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Dandelion Doom Concentrate herbicide application to dandelions in lawn

Dandelion Doom Concentrate Instructions

Ready to get to the root of your weed problem? Learn how to assemble your concentrate kit, how to apply it, and get best practices to control weeds in your lawn.

Read article

Customer reviews

Based on 113 reviews!
Popular topics
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Justin
Verified Reviewer
Waste of Money

Should have listened to the other negative reviews before buying. Followed directions, applied in sunny/dry conditions, and even applied to a variety of different weeds. It's been two days, and every single weed is still alive and well.

Published date
08/15/25
Was this review helpful?
0
0
Jacob
Verified Reviewer
Great Product

I used this product approximately 24hrs ago on my lawn on both clover and some broad leaf weeds and I can see it working already. The weeds have already browned and are shriveling while the grass has remained healthy. I used this product with some level of skepticism after reading the other reviews ...

Published date
08/10/25
Was this review helpful?
1
0
Lori
Verified Reviewer
Sunday Customer Service is Great

I used Dandelion Doom without success. I left a review and Sunday contacted me and worked though the issue with *and actual person*. They explained what may have happened and they sent me a different product to try after looking at pictures of the weeds in my lawn that I sent. Kudos for the advice a...

Published date
06/29/25
Was this review helpful?
1
0
LB
Verified Reviewer
Applied as directed. Did not kill a single weed.

Applied as directed. Did not kill a single weed. I would not use again. Very disappointed.

Comments by Store Owner on Review by Store Owner on Mon Jun 16 2025
Store Owner
We're sorry to hear that this was your experience! It sounds like you've followed our best practices, so our expert Yard Advisor team would like to take a look at your weed situation to see what's going on. Can you send photos of your weeds to our team at [email protected] so they can help?
Published date
06/15/25
Was this review helpful?
0
1
Kami Z.
Verified Reviewer
Didn’t work

Did the 2 rounds of this and neither worked to get rid of our weeds! We did it during dandelion season too!

Comments by Store Owner on Review by Store Owner on Wed Jun 04 2025
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
06/02/25
Was this review helpful?
0
1
Greg D.
Verified Reviewer
Does not kill dandelions or creeping charlie

I had high hopes that this would work on dandelions and creeping charlie. It did not. Dandelions do wilt, but simply return. Creeping charlie was barely affected. Back to herbicides, unfortunately.

Comments by Store Owner on Review by Store Owner on Mon May 19 2025
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
05/16/25
Was this review helpful?
1
0
Becky
Verified Reviewer
Wow… it killed them all!

This was my first time using dandelion doom. We are up in Bozeman MT with unpredictable weather right now but I made sure to choose the right day - sunny and warm with emerging, healthy dandelions (covering pretty much our entire lawn, they were out of control this year). So I took my time spraying ...

Published date
05/14/25
Was this review helpful?
3
1
M
Verified Reviewer
Not effective

We applied this product as instructed: it was the ideal temperature, on actively growing weeds, and applied as a spot treatment. I’d estimate it worked on less than half of the dandelions in our yard. After two emails with Sunday, their answer seems to be “apply it again. ” We used what was included...

Comments by Store Owner on Review by Store Owner on Tue May 13 2025
Store Owner
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
05/12/25
Was this review helpful?
3
0
Jen
Verified Reviewer
Sprayer clogs

The product is a "4," but the sprayers are a "0. " I bought two sprayers at the end of last year to use this spring, but they clogged on the first use. I'm unsure what is getting stuck inside, but it is slimy and thick. I've tried shaking the concentrate to break up the gunk as best as possible. It ...

Comments by Store Owner on Review by Store Owner on Sat May 10 2025
Store Owner
Hi Jen, we're so sorry to hear that this was your experience! Our support team would love to help you with your sprayer issues. You can reach them at [email protected] or by calling 415-903-6932.
Published date
05/09/25
Was this review helpful?
0
0
Leslie
Verified Reviewer
Did nothing for my weed covered lawn :(

Unfortunately, Dandelion Doom Weed Killer did nothing for my lawn. I drenched the leaves and spread heavily throughout but the lawn is still riddled with weeds! Some areas now have more weeds than before. I have also seeded twice after applying and I'm still under a bed of weeds.

Comments by Store Owner on Review by Store Owner on Fri May 09 2025
Store Owner
Hi Leslie, thanks for sharing with us! We recommend connecting with our expert Yard Advisor team, they can take a look at these photos and help you address these weeds. You can reach them at [email protected] or by calling 415-903-6932.
Published date
05/08/25
Was this review helpful?
1
0

$22$44