Dandelion Doom Weed Killer Concentrate Refill

Name: Dandelion Doom Weed Killer Concentrate Refill
Brand: Sunday
SKU: BWS1004
Price: 22.00 USD
Availability: InStock
Rating: 3.7 (113 reviews)

$22

5 oz. concentrate bottle Covers up to 224 sq. ft.

113 reviews

Dandelion Doom weed control concentrate 5 oz

Person applying Dandelion Doom Weed Control using Sunday pouch and sprayer

Mini bottle, major results

Iron-powered selective weed killer refill for your existing Dandelion Doom sprayer system. Controls weeds and moss without harming grass.

Free shipping! Ships in 1-2 business days

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Kill weeds with less waste

Refill your Dandelion Doom starter system for continuous weed control.

This concentrated iron-based formula is designed for your existing Sunday herbicide pouch and wand sprayer. The powerful iron (FeHEDTA) formula targets broadleaf weeds, moss, and lawn diseases while leaving your grass unharmed. It works quickly on dandelions, clover, chickweed, and many other common lawn weeds, offering a sustainable, cost-effective solution for ongoing weed management.

PRODUCT FEATURES

Lawn-safe weed killer concentrate refill
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 224 sq. ft.

WHAT'S INCLUDED

5 oz. bottle of iron chelated (FeHEDTA) concentrate weed killer. Designed as a refill 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:

Pour one full bottle of Dandelion Doom 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 weeds in your lawn until leaves are entirely covered
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?

Effective against broadleaf weeds like black medic, plantain, thistle, chickweed, creeping buttercup, creeping charlie, dandelion, geranium sp., English daisy, false dandelion, healall, oxalis, speedwell sp/, knotweed, shepherd’s-purse, silverweed cinquefoil, white clover, wild chamomile, as well as moss, liverworts, algae and lichens.

It can also control or suppress lawn diseases: dollar spot, rust and/or snow mold.

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

Yes, this is a refill concentrate 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 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?

Yes, it can cause staining due to high iron content. Avoid using on sidewalks or hard surfaces. If you accidentally spill, immediately spray and dilute the area. For best results, mix over grassy or landscaped areas.

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

This product is approved for use in all states.

Sunday Dandelion Doom Concentrate Label

Dandelion Doom Concentrate SDS

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

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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

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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

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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

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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.

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

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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!

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

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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.

Store Owner

Published date

05/16/25

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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

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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...

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

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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 ...

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

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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.

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

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