Top 10 Best Weed and Grass Killers Reviews in 2018

Nothing can be more upsetting to homeowners than the sight of weeds in their lawns. Invasive and destructive, weeds cause immense frustration. This arises from the detriment they cause to lawns and gardens.

Fortunately, you will find a plethora of weed killers on the market. These products make life easier by eliminating and preventing weed infestation on your garden. Nonetheless, not all weed killers get the task done.

In our review, we have come up with a list of the best weed and grass killers, to help you choose one that is effective. Also, we have highlighted the attributes to consider when selecting weed and grass killer.

List of the Top 10 Best Weed and Grass Killers in 2018

Spectracide Weed & Grass Killer Concentrate2 (HG-56201)Buy on Amazon
The AMES Companies,Inc Bonide 069 Sedge Ender Weed Killer Concentrate, 16-OuncesBuy on Amazon
PBI / Gordon 792000 Weed-Out Lawn Weed Killer, Size 1Buy on Amazon
Bonide Products 7492 Burnout, Ready To Use, All Natural Weed & Grass KillerBuy on Amazon
RM43 43-Percent Glyphosate Plus Weed Preventer Total Vegetation Control, 2.5-GallonBuy on Amazon
Ortho GroundClear Vegetation Killer Concentrate, 2-GallonBuy on Amazon
BioAdvanced DuraZone Weed & Grass Killer Concentrate, 32-OunceBuy on Amazon
Southern Ag Crossbow Specialty Herbicide 2 4 D & Triclopyr Weed & Brush Killer, 32oz - 1 QuartBuy on Amazon
Spectracide Weed & Grass Killer with Extended Control Concentrate 32 oz., 1-PKBuy on Amazon
Compare-N-Save Concentrate Grass and Weed Killer, 41-Percent Glyphosate, 1-GallonBuy on Amazon

10. Scotts Halts Crabgrass & Grassy Weed Preventer

Scotts Halts Crabgrass & Grassy Weed Preventer

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Crabgrass is tough to control, but not with this highly-competent Scotts Halts Weed Preventer. It is an all-season weed killer, meaning it works efficiently regardless of the season.

This weed killer covers a large area of up to 5,000 square feet. This makes it an excellent buy for those with big farms. However, the manufacturer recommends that the product be avoided in areas with bentgrass.

     Pros     Cons
  • Turns your lawn into the least weedy area
  • Consistently outperforms other models
  • Fails to work effectively

9. Bonide Concentrate Sedge Ender Weed Killer

Bonide Concentrate Sedge Ender Weed Killer

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The Bonide weed killer is another affordable and top-rated product on the market. It is one of the best alternatives for sedge eradication. And, aside from destroying weeds, this solution prevents the growth of nut grass and goose grass.

The core ingredients of the Bonide Concentrate are sulfentrazone and Prodi amine. These elements are effective enough and can be used on a 20,000 square feet area.

     Pros     Cons
  • Comes with all the mixing instructions
  • Ideal for sedge eradication
  • Controls growth of broadleaf plants
  • Not rainproof

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8. PBI/GORDON 792000 Weed-Out Lawn Weed Killer

PBI/GORDON 792000 Weed-Out Lawn Weed Killer

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Weeds tend to degrade the value and health of your lawn and garden. Worse even is the manner in which they grow at an uncontrollable rate. It is in such situations that the PBI/GORDON product comes to your rescue.

This concentrate is specially designed for the hard-to-control lawn weeds, which include more than 250 broadleaf weeds. Available in a one-gallon container, this product has also proven to be effective on cool-season grasses. It covers an area of 32,000 to 64,000 square feet.

     Pros     Cons
  • Effective in eliminating troublesome weeds
  • Covers approximately 32000 to 64000 square feet
  • Comes in a gallon size container
  • Spraying more than once is required to get rid of the stubborn weeds

7. Spectracide Weed & Grass Killer2

Spectracide Weed & Grass Killer2

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Spectracide provides an easy and fast way of killing those unwanted greeneries. Its quick-acting formula delivers results in as little as three hours. You can use this product on driveways, gardens and along foundations.

Being a non-selective type of weed killer, it will kill any plants it comes into contact with. The maximum coverage of this product is about 16,000 square feet. Advisably, you should spray this solution during spring to prevent weed growth at the initial stage.

     Pros     Cons
  • Low-budget solution
  • Rainproof in 15 minutes
  • Achieves results within three hours
  • Fails to provide long-term benefits

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6. RM43 43-Percent Glyphosate Plus Weed Preventer

RM43 43-Percent Glyphosate Plus Weed Preventer

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Manufactured by RM43, this is a bare ground concentrate for treating weeds and grasses. This concentrated formula consists of glyphosate and imazapyr. Both elements are useful in destroying noxious weeds, grasses, vines, brush, and trees.

Available in a 2.5-gallon container, this weed killer can cover an area of 43,000 square feet. Aside from killing weeds, it can prevent their growth for one year. Spray the RM43 Weed Preventer along fence rows, driveways, parking lots and barns.

     Pros     Cons
  • Treats large lawn areas
  • For spot and bare ground treatments
  • Has no harmful chemicals
  • Large 2.5-gallon container
  • Can kill useful plants as well

5. Ortho GroundClear Vegetation Killer Concentrate

Ortho GroundClear Vegetation Killer Concentrate

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Available as a concentrate, the Ortho GroundClear is one of the best weed killers on the market. Forget about the lawn mower, which doubles up as a lawn and weed management tool. This product features an advanced formula for destroying weeds in one go.

Like most of the weed killers on our review, it also acts fast and swiftly. The Vegetation killer can destroy weeds and also suppress their growth for about one year.

     Pros     Cons
  • Comes with detailed instructions
  • Delivers results in just a few hours
  • Kills weeds, grasses, and shrubs
  • Prevents growth for a year
  • Slightly expensive

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4. Preen Garden Weed Preventer

Preen Garden Weed Preventer

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The performance of this weed killer is top-notch. It comes in an original package that provides a fast-acting remedy. Also, it has a long shelf life and a slow release technology for suppressing weeds for up to three months.

Contrary to most weed killers that have to be applied several times to work, the Preen Garden is only applied once. It causes zero harm to humans, pets, kids and the surrounding. But, the key highlight if Preen Garden is its multifunctional feature. You can mix it with soil when seeding to prevent weed growth.

     Pros     Cons
  • Has a rainproof formula
  • Safe on vegetables and trees
  • Effective for up to 12 weeks
  • 900 square foot coverage
  • Not effective for destroying all weeds

3. Southern Ag Crossbow Weed & Brush Killer

Southern Ag Crossbow Weed & Brush Killer

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Another efficient herbicide for controlling weeds and grasses is the Southern Ag Crossbow Herbicide. It is a type of non-selective weed killer. This product consists of Butoxy Ethyl, a compound that can destroy unwanted woody plants, perennial and annual weeds.

The Southern Crossbow comes in a ready-to-use solution. All the homeowner has to do is to mix it with water. Also, this concentrate can deal with the tough, stubborn weeds such as poison ivy.

     Pros     Cons
  • Eco-friendly
  • Entirely safe for kids and pets
  • Acts swiftly
  • Can prevent regrowth of weeds
  • Not suitable for commercial use

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2. Roundup Weed and Grass Killer Concentrate Plus

Roundup Weed and Grass Killer Concentrate Plus

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For a long time, Roundup Weed and Grass Killer has been one to America’s top options for weed killers. It features a super-concentrated formula that destroys unwanted plants. With most products, they only cause these weeds to wilt. However, the Roundup weed killer destroys irritants from within their roots.

Noticeable results can be achieved within 12 hours of using this weed killer. This can be attributed to its competent ingredients that include 50% of glyphosate and diquat (.73%).

     Pros     Cons
  • Rainproof in half an hour
  • Achieves results within 12 hours
  • Cost-effective
  • Not suitable for long-term use

1. Compare-N-Save Concentrate Grass and Weed Killer

Compare-N-Save Concentrate Grass and Weed Killer

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This weed killer comes in a one-gallon container, with which you can make at least 85 gallons of spray. It contains 41% of glyphosate, which does an excellent job of destroying weeds. It can kill both perennial and annual weeds, grasses among other undesirable greenery. You can use it on driveways, patios, and fences.

Compare-N-Save weed killer is designed to treat more than 25,000 square foot sections. It can be used during both dry and wet climatic conditions. And, as long as it is sealed and not left exposed to direct sunlight, this product has an unrestricted shelf-life. With this product, all weeds die within five days to two weeks.

     Pros     Cons
  • Affordable
  • Fast-acting
  • 25,000 square foot coverage
  • Kills both weeds and grasses
  • Does not perform as well as advertised

Weed and Grass Killer Buying Guide

Weeds thrive by taking up nutrients from the crops in your garden. They compete for essentials such as water and sunlight. It is this imbalance and loss of nutrients that causes most grasses and lawn plants to weaken and die. You can prevent this by investing in a quality weed killer. When selecting weed and grass killers, consider the following:

– Type of Weed Killer

Primarily, we have three kinds of weed killers.

  • Non-selective- they are designed to deplete any and all plants that they come across. Be cautious when using non-selective weed killers to avoid destroying useful plantation.
  • Selective- these are designed to target particular weeds. Selective weed killers are ideal for vast farming areas. They help to eliminate only the unwanted plants.
  • Liquid- a majority of weed killers are available in liquid forms. These can be concentrated solutions or in ready-to-use formulae.

– Ingredients Used: Another aspect to consider entails the ingredients contained in the weed killer. While some consist of naturally-occurring compounds, others constitute synthetic substances. The elements included in a particular weed killer determine its quality.

– Intended Purpose: Before choosing a specific weed killer, consider the area you intend to use this product on. For large lawns or gardens, you will need high-capacity gallons to meet your needs. Other weed killers are designed for small areas.

– Safety: Safety is another crucial factor for consideration. More specifically, you need not invest in weed killers that can harm the environment, kids or pets. Organic weed killers are preferred to synthetic ones since they are degradable.


The reviewed weed killers have the ingredients required to destroy all kinds of weeds. Contrary to herbicides, most of these products do not contain any toxins; hence, safe for the environment. With these weed killers, you are guaranteed that your lawn will remain healthy and beautiful.


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