Dandelion Doom Herbicide Concentrate Refill (2-pack)

Name: Dandelion Doom Herbicide Concentrate Refill (2-pack)
Brand: Sunday
SKU: SBA2057
Price: 33.00 USD
Availability: InStock
Rating: 3.5 (139 reviews)

$33 $44

2 -5 oz. concentrate bottle

139 reviews

SAVE $11

Sunday Dandelion Doom iron based lawn safe weed killer 5 oz concentrate refill bottles 2 pack

Woman applying Dandelion Doom Weed Killer using Sunday gallon pouch and sprayer

Mini bottles, major results

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

Free shipping! Ships in 1-2 business days

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Keep the grass and lose the weeds

Dandelion Doom Concentrate Refill is an iron based lawn safe weed killer that goes after dandelions, clover, thistle, chickweed, and plantain. The FeHEDTA formula overwhelms broadleaf weeds while your grass continues to thrive. No 2,4-D, no harsh chemicals. A post-emergent spot treatment for weeds you can see. Pour, mix, and spray with your Dandelion Doom Starter Pack.

What makes Dandelion Doom Herbicide Concentrate Refill (2-pack) different

Targets broadleaf weeds, results in hours
Iron based formula with no harsh chemicals
Grass stays green while broadleaf weeds fade
Works with your existing herbicide sprayer
Also controls moss, liverworts, and algae
Approved for use in all 50 states

Ingredients

Chelated Iron (FeHEDTA) is the active ingredient. Iron occurs naturally in soil and your lawn already uses it. When sprayed directly on broadleaf weeds, they absorb the iron fast and it overwhelms them. Grass absorbs the iron slowly, so it tolerates the treatment. You may notice temporary darkening of your grass after application. That's just the iron doing its thing, and your lawn will bounce right back.

How to use

Apply when temperatures are between 50 and 85 degrees F and no rain is expected for at least 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 and shake well
Spray onto weeds in your lawn until leaves are entirely covered
Repeat treatment in 3 to 4 weeks for best results

FAQ

When should I use Dandelion Doom on my lawn?

Dandelion Doom Herbicide Concentrate works best from spring through fall when weeds are actively growing. Apply between 50 and 85 degrees F when no rain is expected for at least 3 hours.

Avoid mowing 1 to 2 days before and after treatment.

How long does it take for Dandelion Doom to work?

Dandelion Doom Herbicide Concentrate shows visible results within 1-2 days. Weeds darken and wilt as the iron formula takes effect.

For stubborn weeds, reapply every 3 to 4 weeks. Spray until leaves are entirely covered.

Why is my grass turning dark after applying Dandelion Doom?

Dandelion Doom Herbicide Concentrate can temporarily darken grass blades due to the iron formula. This is normal and your grass will recover.

Broadleaf weeds absorb iron faster than grass, which is how Dandelion Doom stays selective.

How do I apply the concentrate?

Dandelion Doom Herbicide Concentrate Refill requires the Sunday Herbicide Pouch and Sprayer in order to apply the product. The reusable pouch and sprayer are sold separately, or can be purchased as part of the Dandelion Doom Starter Pack

How is iron based weed control different from conventional weed killers?

Dandelion Doom uses iron chelate (FeHEDTA) instead of conventional ingredients like 2,4-D. Weeds absorb the iron quickly and it overwhelms them, while the grass remains unaffected.

No harsh chemicals. Also controls moss, algae, and lawn diseases like Dollar Spot.

What weeds does Dandelion Doom get rid of?

Dandelion Doom Herbicide Concentrate targets broadleaf weeds including dandelion, clover, thistle, chickweed, plantain, creeping charlie, and oxalis. Also controls moss, algae, and lichens.

It does not affect grasses or grass like weeds, or prevent new weeds from sprouting. Each 5 oz bottle treats up to 224 sq ft. The 2-pack covers 448 sq ft total.

Documents

Dandelion Doom Concentrate Label

Dandelion Doom Concentrate Safety Data Sheet

Sunday Dandelion Doom concentrate bottle and Weed Killer concentrate pouch with hose and spray wand displayed on grass with a blurred garden background.

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Customer reviews

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Greg D.

Verified Reviewer

LocationMadison, WI

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.

Sunday

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

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Becky

Verified Reviewer

LocationBozeman, MT

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

LocationIndiana

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...

Sunday

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

LocationMinneapolis

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 ...

Sunday

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

LocationNashville, TN

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.

Sunday

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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Hunter L.

LocationMinnesota

Lacks killing power.

Dandelion Doom- Looks like it hurts the plants but doesn't kill them. I have made 2 batches of Dandelion Doom spray over the past 4 days, used it all. I still have dandelions, still in the same spots. Seems to hurt the plants the day of use and the next day but after 2 days they regain strength. I o...

Sunday

Published date

05/08/25

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Verified Reviewer

LocationMadison, WI

Zombie plants

I can't believe all the 1 star reviews. Must be corporate Round-Up reps or something. The dandelions I've sprayed this on are dead as shit. They are all black and look like zombie plants next to the green grass.

Published date

05/07/25

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Josh

Verified Reviewer

LocationHammonton, NJ

Killed my lawn.

This killed maybe 5% of the weeds and 100% of the grass it was sprayed on. It left big black spots where I sprayed. It looks like I torched the weeds with a blow torch and burned the grass. Before I get the generic response I'm seeing: Yes, it was a sunny day. No, it didn't rain within even days of ...

Sunday

Hi Josh, we're so sorry to hear that this was your experience with Dandelion Doom! This shouldn't be the result that you see and our expert Yard Advisor team would love to take a look and help you out. You can reach them at [email protected] or by calling 415-903-6932.

Published date

05/04/25

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Josh

Verified Reviewer

LocationHammonton, NJ

Killed my lawn

This killed about 5% of the weeds and killed 100% of the grass it was sprayed on. There's just big black spots on my lawn wherever I sprayed this. It looks like I torched my grass.

Sunday

Published date

05/04/25

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Zac B.

Verified Reviewer

LocationRoosevelt Utah

Worst product ever!

Purchase this for the first time (and last) to kill some dandelions coming in the yard. Sprayed and could tell zero affect after a day. Even more dandelions started coming in and I feel like it was a fertilizer more than a weed killer. Maybe I received a bad batch

Sunday

Hi Zac, 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

05/02/25

Was this review helpful?