Best Dandelion Killer (2020 Reviews Updated)

Last Updated on November, 29th 2020


Choosing the best dandelion killer to keep pesky weeds off of your property is an important decision. With so many options on the market, it’s crucial to be well-informed and up-to-date on the available choices. Read on to learn more about the best weed killers and herbicides that are garnering consumer attention this season.

Reviews of the Best Dandelion Killers

1) Roundup Extended Control Weed and Grass Killer Plus Weed Preventer II Concentrate, 16-Ounce

Roundup Concentrate Extended Control Weed & Grass Killer Plus Weed Preventer II

Roundup Extended Control Weed and Grass Killer does it all— it kills dandelions to the root, prevents new growth, and even shows visible results within just a few hours. The effects of its dual-action formula can be seen for up to 4 months, and it’s recommended for use on a variety of surfaces, including driveways, sidewalks, patios, fences, foundations, curbs, retaining walls, lawn edgings, and gravel areas.

Additionally, it’s rainproof from 10 minutes after use, so you don’t need to worry about unexpected rain showers washing away your effort, time, and money. Best of all, Roundup Extended Control comes with a consumer guarantee that states that if you aren’t totally satisfied with it, all you have to do is send in the original proof of purchase and you can receive a replacement of the product or a full refund.

If you’re searching for one of the best dandelion killers that is effective in killing weeds, preventing weed growth, and can be used in a variety of common locations for fast results, Roundup Extended Control is a great option.


  • Kills to the root and prevents new growth
  • Dandelion killer last for four month
  • 16-oz. bottle may not be sufficient for larger properties

2) Southern Ag 2, 4 – D Amine Weed Killer, 1 Quart

Southern Ag Amine 24-D Weed Killer, White Bottle

Southern Ag 2, 4 – D Amine Weed Killer is a great option for property owners who want to control their weeds in open areas, such as pastures, rangeland, ditch banks, and around fences. It is primarily designed to prevent the growth of broadleaf weeds and woody plants. It utilizes a 4-D acid equivalent liquid concentrate in a low volatile amine form.

This one-quart container goes a long way. Southern Ag 2, 4 – D Amine Weed Killer is concentrated for an economical use rate to be effective in both ridding your property of weeds and saving you money. Many weeds—especially larger ones—can be very stubborn, but that doesn’t mean you should have to use large volumes of a product to eliminate them.

This product is recommended for consumers who need a strong, effective best dandelion killer that is designed to do away with even the most persistent weeds in areas that aren’t directly next to plants.


  • Concentrated, high-strength formula
  • Effective in killing aggressive weeds
  • Can cause unwanted damage to neighboring vegetation
  • Higher concentration means you can run out faster when overused

3) Scotts Turf Builder Lawn Food – Best Dandelion Killer – Starter Food for New Grass Plus Weed Preventer

Scotts Turf Builder Weed and Feed 3, 5,000 sq. ft.

Scotts Turf Builder Lawn Food is a fantastic choice for lawn owners who wish to nourish their grass and prevent weeds with a single product. Not only do you reap the benefits of having your new grass grow faster, healthier, and thicker compared to unfed grass, but you can also prevent crabgrass, dandelions, and other weeds from overtaking your lawn.

Despite its effectiveness and versatility, Scotts Turf Builder Lawn Food won’t do major harm to new grass. It’s designed to allow weeds to barely sprout and then quickly die off, so as not to damage your lawn. This is an important factor to consider, as many weed killers are overly effective and can kill off parts of your lawn and garden which you wish to keep alive and healthy.

Overall, Scotts Turf Builder Lawn Food is recommended for someone who wishes to tend to their lawn and promote healthy growth of underdeveloped patches of grass. It is one of the best dandelion killers for yards that only need some maintenance.


  • Provides added nutrition to grass and prevents weeds simultaneously
  • Weed prevention is effective for up to 6 weeks
  • Doesn’t kill existing weeds
  • Will need more frequent use compared to others on this list

4) Preen Garden Weed Preventer

Preen Garden Weed Preventer is a top choice for the attentive gardener who likes to think ahead, prevent weed growth, and save valuable time by avoiding unnecessary hand-weeding from their gardening routine. It is safe to use around more than 200 flowers, vegetables, trees, and other types of vegetation. Best of all, these plants are all listed on the label.

By using this weed preventer throughout your garden just once, you can halt weed growth for up to 90 days. After ensuring that the existing weeds have been cleared from your garden, it does a thorough job of preventing new growth. This can be a significant time saver in the long run when thinking about how long it takes to weed by hand.

Preen Garden Weed Preventer is an excellent choice for people who wish to ensure that no harm comes to the plants in their garden. When used properly, it can successfully keep your garden safe and weed-free without doing collateral damage to your plants. This is a common concern for many similar herbicides on the market today.


  • Combats a very wide variety of weeds
  • Prevents weeds for up to 3 months
  • Only preventative and not effective in killing existing weeds

5) Compare-N-Sayove Concentrate Grass and Weed Killer, 41-Percent Glyphosate, 1-Gallon

Compare-N-Save Concentrate Grass and Weed Killer, 41-Percent Glyphosate, 1-Gallon , White - 016869

This best dandelion killer is an excellent value for property owners who want to get to the root and do away with weeds once and for all. It’s fast-acting, highly-concentrated, and is sure to kill off grass and weeds that threaten to overtake your lawn and garden.

What makes Compare-N-Save 41-percent Glyphosate Concentrate Grass and Weed Killer stand out is the fact that within 2–4 days, you’ll see visible results in getting your weeds under control. It is also rainproof two hours after being sprayed, so you don’t have to worry about unexpected rainfall washing away the time or money spent on weed control.

Consumers love that this is a strong, concentrated weed killer that kills even the most aggressive weeds to the root. It shows results very quickly. Just 1.5 ounces of it mixed with a gallon of water can cover as much as 300 square feet. Note that its high concentration makes it deadly for many plants, so it should be carefully sprayed only on those which you wish to eliminate.


  • Concentrated formula is highly effective in killing of weeds
  • Very economical price to coverage ratio
  • Doesn’t prevent future weed growth
  • Can kill other plants

 6) PBI/Gordon 652400 Speed Zone Lawn Weed Killer, 20-Ounce

PBI/Gordon 652400 Speed Zone Lawn Weed Killer, 20-Ounce - Brown/A

Whether you’re trying to eliminate dandelions, ivy, clover, or any other persistent, garden-variety weed, PBI/Gordon 652400 Speed Zone Lawn Weed Killer can get rid of all of them quickly and without hurting your lawn in the process.

This is a fast-acting herbicide with results that can be seen as early as 1–2 weeks from the first use. It can be used for a wide variety of different sites, including institutional and residential.

This product is ideal for property owners who have much ground to cover when tending to weed control. Within two weeks of using it, you can confidently reseed your property with the confidence that your weeds have been eliminated.

PBI/GordonSpeed Zone Lawn Weed Killer is most recommended for a person who wishes to quickly eradicate a wide variety of the most common weeds growing in warm-season or cold-season grass without harming neighboring vegetation.


  • Can be used on warm-season or cold-season grass
  • One bottle can service 14,000–18,000 feet of property
  • Not as strong as some more concentrated formulas

7) Roundup Weed and Grass Killer Super Concentrate, 1-Gallon

Roundup Weed and Grass Killer Super Concentrate, 1-Gallon

When seeking to eliminate troublesome weeds while still getting the most bang for your buck, Roundup Weed and Grass Killer Super Concentrate is the choice for you. It can wipe out aggressive, widespread weeds and can be used in a variety of areas. Whether weeds are growing near your flowers and trees or along your sidewalk or driveway, its super concentrate formula can rid you of weeds within just a few days.

This herbicide does a good job because it’s designed to kill dandelions to the root to prevent regrowth. Once it has killed off your weeds, you can expect them to stay gone. On top of that, it’s rainproof within 30 minutes. No matter where you use it on your property, it can get the job done. It even comes with a consumer guarantee that allows for a refund of the purchase price in the event that you aren’t totally satisfied.

Roundup Weed and Grass Killer Super Concentrate is recommended for property owners who wish to kill weeds to the root with a strong, highly-concentrated herbicide that comes at excellent value and can be used in a variety of locations.


  • Kills to the root
  • Highly-concentrated formula
  • May damage neighboring vegetation if used in close proximity


When trying to decide which of these products is the best dandelion killer, there are a number of factors to consider. The concentration of the herbicide, how quickly it eradicates weeds, the effects which it will have on surrounding plants, and the varieties of weeds which it can combat are all crucial details to take into account.

By keeping your needs in mind as you decide which weed killer is the best fit for your property, you can make an informed decision on how to best clear troublesome weeds off of your property this season.

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