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Dandelion Doom Weed Killer Concentrate Refill

$22

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

Dandelion Doom weed control concentrate 5 ozPerson applying Dandelion Doom Weed Control using Sunday pouch and sprayerData SheetData SheetData Sheet

Mini bottle, major results

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

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$22

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Dandelion Doom weed control concentrate 5 ozPerson applying Dandelion Doom Weed Control using Sunday pouch and sprayerData SheetData SheetData Sheet

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:

  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

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.

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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

Based on 126 reviews!
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Marc J.
Verified Reviewer
LocationIN
Fast working and effective!

I used the small wand with a pouch and sprayed each dandelion plant individually. Before spraying, my yard looked like my neighbors. 24 hours later, they are dying nicely!

Published date
04/04/26
Was this review helpful?
1
0
Jodie
Verified Reviewer
LocationConnecticut
Mixed results. Some great, some just ok.

worked like a CHARM last year. This year seems to be more of a challenge. Also when I used iron boost last year, it seemed to somehow prevent almost all the dandelions from blooming. The ones that did bloom last year were zapped right away with the dandelion killer. This year maybe I was late to spr...

Published date
04/18/26
Was this review helpful?
0
0
Stephen R.
LocationUtah
Dandelion boom…

After emptying 4 gallons on hundreds of dandelions, I’m here to report that not even one died. This product is like dumping water on them.

Published date
04/18/26
Was this review helpful?
2
0
Bryan
Verified Reviewer
LocationAnnapolis, MD
Dead dandelions and wild violet!

Worked within a day on the dandelions. As a bonus, it also worked on the wild violet that was spreading into the yard. I tried to

Published date
04/15/26
Was this review helpful?
0
0
Allison P.
Verified Reviewer
Kills grass

I tried this on my lawn o. Clover and other leafy weeds, but it killed my burmuda grass as well and didn’t do a great job on the actual weeds.

Comments by Store Owner on Review by Sunday on Tue Apr 14 2026
Sunday
Hello Allison, we're sorry to hear that, that’s definitely frustrating when your grass takes a hit and the weeds stick around. Dandelion Doom is designed to target broadleaf weeds without harming turf, but Bermuda grass can sometimes be more sensitive, especially in heat or if the lawn is already stressed. In the meantime, watering the lawn deeply but infrequently can help your grass recover and strengthen roots. We’re here to help you get things back on track and dial in the right approach for your lawn.
Published date
04/12/26
Was this review helpful?
0
0
Nick
Verified Reviewer
LocationNM
Didn't work

I really wanted this to work. I took a picture of the plants I was having problems with and this was the recommendation I got. I've applied both bottles, saturating all of the weeds. The bottle says you should see results in a few hours, but 24 hours later and everything is still doing fine, even th...

Comments by Store Owner on Review by Sunday on Mon Apr 06 2026
Sunday
Hi Nick, I'm sorry to hear that our product didn't meet your expectations. We really appreciate you giving it a shot—and sharing the details here. Dandelion Doom should start showing visible changes within a day, especially on true dandelions, so if everything looks untouched after 24 hours, that’s not the experience we want you to have. A couple factors like weed type, maturity, and coverage can impact results—but even then, you should be seeing something. Glad to hear your grass is doing okay—that part matters too. If you’re up for it, send us that photo you mentioned and we can help ID what you’re dealing with and recommend the right next step (or make this right for you)
Published date
04/04/26
Was this review helpful?
1
1
Natalie B.
Verified Reviewer
LocationCentral Texas
Great product

I have been using this product for several years on a very resistant bull thistle that kept popping up all over my yard. It kills it dead in a few hours. I like that it is not poison and won't harm the environment or my kids or pets. It is super effective for spot treating only the weeds you want to...

Published date
02/21/26
Was this review helpful?
0
0
Joe P.
Verified Reviewer
LocationVA
No Success

I used this product as the instructions stated but received negative results. It was 0% effective on my yard, so I’m very hesitant to try it again. I was hoping for success, but it looks like I’ll have to switch to another weed control product.

Comments by Store Owner on Review by Sunday on Mon Sep 15 2025
Sunday
We're sorry to hear that your results didn't meet your expectations! Although Sunday generally performs exceptionally, every lawn is unique and can face varying challenges throughout the seasons. Have you spoken with your Yard Advisor yet? They're ready to help you maximize the effectiveness of your products. You can contact them at [email protected] or by calling 415-903-6932.
Published date
09/13/25
Was this review helpful?
4
2
Michael
Them weeds be dead

Not sure why these other people are saying it didn’t work. It killed almost all of my weeds. Did use a lot more product than expected but it killed the weeds without harming the grass.

Published date
09/06/25
Was this review helpful?
7
0
Debbie H.
Verified Reviewer
No Dead Weeds in Our Florida Lawn

This weed killer came with our lawn plan. I applied as directed, and not one weed was killed in our Florida lawn. About a month later, I bought an Ortho product, and that did the trick. Dandelion Doom is worthless.

Comments by Store Owner on Review by Sunday on Wed Sep 03 2025
Sunday
Hi Debbie, thanks so much for sharing your experience with us! Our expert Yard Advisor would love to take a look at the weeds that you're treating and make recommendations on how to tackle them. You can reach them at [email protected] or by calling 415-903-6932.
Published date
09/01/25
Was this review helpful?
4
1

$22