Dandelion Doom Herbicide Concentrate Refill (2-pack)

Name: Dandelion Doom Herbicide Concentrate Refill (2-pack)
Brand: Sunday
SKU: SBA2057
Price: 35.20 USD
Availability: InStock
Rating: 3.6 (127 reviews)

$35.20 $44

2 -5 oz. concentrate bottle

127 reviews

SAVE $8.80

Dandelion Doom weed control concentrate 5 oz

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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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:

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

FAQ

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.

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.

Dandelion Doom Concentrate Instructions

Ready to get to the root of your weed problem? Learn how to mix your Dandelion Doom Concentrate, how to apply it, and get expert tips to control broadleaf weeds in your lawn.

Read article

Customer reviews

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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

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

05/08/25

Was this review helpful?

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?

Michael B.

LocationMatawan, NJ

absolutely nothing was killed

its been a week after I have used your products, killed absolutely nothing. Followed instructions, and looks like I got more flowers instead of killing them.

Sunday

Published date

04/24/25

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Matt C.

Verified Reviewer

LocationNebraska

Dandelion Doom??? More like Dandelion Boom!!

I just subscribed to your lawn care program, and I was excited to try the Dandelion Doom that was sent to me. So far, I have to say I am far from impressed with your product. I followed the instructions for that spray, and I am not sure it killed even 1 dandelion in my yard. I truly hope your ...

Sunday

Published date

04/23/25

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