Best Crabgrass Killer & Preventers – 2019 Reviews

Having tried and tested different herbicides, I have come to learn one or two things about keeping lawns weed-free. For this post, I am sharing my reviews of the best crabgrass killers (pre-emergents and post-emergents).

Some lawn weed killers can kill your grass alongside weeds, whether it is St. Augustine or Bermuda grass and take you back to square one – germination. In order to get rid of crabgrass for good, you must first get a good weed killer and then do your timing perfectly. More on this later.

Best Pick

Primesource Quinclorac 1.5L Select (Drive XLR8) Liquid Crabgrass Killer
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Primesource Quinclorac 1.5L Select (Drive XLR8) Liquid Crabgrass Killer50
  • Quinclorac 18.92%
  • Residential and Non-Residential Turfgrass, Golf Course, Sod...
  • Tank mix partner or sequential application required. Make 2...

10 Best Crabgrass Killers

NamePrice
1. Roundup Extended Control Weed and Grass KillerCheck Price (Amazon)
2. Ortho Weed B Gon Weed KillerCheck Price (Amazon)
3. Ragan & Massey Glyphosate Concentrate Grass and Weed KillerCheck Price (Amazon)
4. Compare-N-Save Concentrate Grass and Weed KillerCheck Price (Amazon)
5. Scotts Halts Crabgrass & Grassy Weed PreventerCheck Price (Amazon)
6. QuinKill Max Crabgrass and Weed KillerCheck Price (Amazon)
7. Bayer Advanced All-In-One Lawn Weed & CrabgrassCheck Price (Amazon)
8. Bayer Advanced 704080 All-in-One Lawn Weed and Crabgrass KillerCheck Price (Amazon)
9. Spectracide Weed Stop For Lawns And Crabgrass KillerNot available on Amazon
10. Primesource Quinclorac 1.5L Select (Drive XLR8) Liquid Crabgrass KillerCheck Price (Amazon)

Having a perfectly mowed lawn is a dream of every homeowner, but crabgrass tends to take over when you are just making progress. My advice: buy a highly effective, top quality crabgrass killer for both pre-emergent and post-emergent weed control.

With the best crabgrass killer and preventer, you’ll ensure that crabgrass and quackgrasses do not spread and take over the lawn. So, after taking a while to understand how the grass grows and how much of a pest it can be, I learned the most-effective products that make it easy to get rid of crabgrass in the lawn.

There are lots of these lawn week killers and preventers on the market. You don’t want to test each of them if you are just starting out your first lawn.

Understanding all of the technical aspects might bore many homeowners and professional gardeners. For this reason, I have focused on the products to help you choose the best crabgrass killers on the market today.

Pre-emergent vs Post-emergent Herbicide for Crabgrass

Before you buy a weed killer for different types of weeds in your yard, it is important to decide whether it is the time to do a pre-emergent or a post-emergent.

Pre-emergent weed killers act before the seeds germinate. This means that you need to know the cycle of weeds in your lawn. For example, if you’re dealing with crabgrass invasion, a pre-emergent herbicide is best applied early enough in spring. I have written this detailed article on the best time to apply crabgrass pre-emergent here. Check it out.

Post-emergent, on the other hand, is a herbicide you apply when you already have weeds that have grown in your yard. Whether in the lawn or along the pave-ways, a good post-emergent crabgrass killer should be able to get rid of crabgrass if you apply it correctly.

Some people do not like using these herbicide chemicals. Other measures of controlling these weeds may include natural options. I’ve tried using baking soda and it worked well for small areas of crabgrass invasion. You can check out my article on how to kill crabgrass using baking soda here.

Remember, even with the best crabgrass herbicide, you must do your timing well. Check with the guides on your type of grass you’ve planted so that the herbicide you go for doesn’t also kill the grass in your lawn.

Experience-Based Product Reviews

These products have been thoroughly checked and tested. I also included a buyer’s guide to help you understand some of the chemicals and features a little better:

1. Ortho Weed B Gon Weed Killer

Best crabgrass killer - Ortho Weed B Gon

The first product on our list comes with a good reputation. The Ortho Weed B Gon Weed Killer comes in a massive one-gallon bottle and the simple spray cap will ensure that you easily apply it on either different spots of larger areas. With the composition of the chemicals, it will only focus on getting rid of weeds such as crabgrass in your lawn.

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According to the manufacturer, the product can kill up to 190 different weeds and help to protect the rest of your lawn. It also works in wet weather conditions and it should be able to help you kill the weeds for up to 1-hour in rainy conditions. Since it kills all the way from the top to the bottom, you only need to apply it to the top end of the weed.

The killing cycle is not that long and this means you will have to constantly apply the product if you have a lot of problems. It will certainly rid your lawn of all the crabgrass, but we did not notice it preventing the grass from growing back. The best-recommended time for you to use this product will be in the spring months.

As for the price, the product is not really that expensive. It comes in various sizes for you to use and the spray cap will make the application much easier. We believe this will be one of the top products to help you kill the crabgrass. However, it is not the best idea for you to use it when you want to prevent crabgrass and you might need to use something else.

Pros:

  • Highly rated killer
  • Does not kill any other plants
  • Rainproof for up to 1 hour
  • Reasonably priced

Cons:

  • Does not really prevent crabgrass from growing

2. Roundup Extended Control Weed and Grass Killer

Roundup Extended Control Weed and Grass Killer

Roundup is one of the leading brands when it comes to weed control in your garden. The Roundup Extended Control Weed and Grass Killer come in a 1.1-gallon bottle and a small additional sprayer is designed to ensure that the application process can be the best way for you to easily apply the killer. It can also be mixed with water and ensure that it is easy to apply on larger areas.

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While it might not be the best product for wet weather, it will still help to keep the weeds from growing back for up to 4-months.

The manufacturer also recommends that it is waterproof for up to 10-minutes when applied before the rain. It is visible for 3-hours, which means you will need to keep off the grass for a while when you have applied it.

Unfortunately, the sprayer might be a little weak and this means you could be better off replacing it with one of your own. Many people also choose to add it with water and this can be decent for you to get the batch onto the grass much faster.

It works really effectively but should be applied in the summer months before the rain comes in. As for the price, most of these products are actually really affordable. Roundup is also a top quality brand that many people have been relying on for many years.

I would recommend this product and many of their other product s for the quality and the value they offer. However, it is not really waterproof.

Pros:

  • Highly reputable brand
  • Prevent crabgrass for up to 4-months
  • Really affordable
  • Works immediately

Cons:

  • Rainproof for only 10-minutes

3. Ragan & Massey Glyphosate Concentrate Grass and Weed Killer

Ragan & Massey Glyphosate Concentrate Grass and Weed Killer

We have tested the Ragan & Massey Glyphosate Concentrate Grass and Weed Killer for killing more than crabgrass. Since it is also recommended for other weeds, we had to try it and it also made it possible for us to test the effectiveness. Glyphosate is an excellent chemical that roots out the weeds and also leaves a mark to prevent them for a couple of months.

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The product is designed to be used in the rainy season. According to the manufacturer, it is fully rainproof for up to 2-hours. We have seen fast results within 1-week, making it an excellent option to use if you are in a hurry.

However, sometimes it may take a little longer and you should also remember to keep some patience.

As I have mentioned, the product does take a little longer to kick in from time to time. This has led many people to think that it does not work. It is also highly concentrated and you will save a lot of money. The 16-ounce bottle can potentially make up to 10-gallons of the killer. You should always mix it with water to dim down the killing process.

I found this product to be really helpful in preventing some of the weeds you occasionally find on your pavement. It is perfect to be used outside on your walkway and your entrance to your home will definitely be looking great. Since it is really affordable, we would always highly recommend it. However, you should add your own sprayer.

Pros:

  • Really effective killer
  • Makes up to 10-gallons
  • Might work fast for some people
  • Really affordable

Cons:

  • In often areas it will take a little longer to work

4. Scotts Halts Crabgrass & Grassy Weed Preventer

Scotts Halts Crabgrass & Grassy Weed Preventer

While many of the products we have selected are directed and weeding out multiple weeds on your lawn, the Scotts Halts Crabgrass & Grassy Weed Preventer is directed at preventing and killing crabgrass from growing. It comes in a packet that is ideal for every sized lawn, ensuring that you do not waste your money on something you won’t need.

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The product is completely weatherproof and they mention that it can potentially keep your lawn free from weeds for the entire season. However, we did notice that it only partially does this for larger lawns.

Nevertheless, it should be really effective for the smaller lawns or on your pavement when concentrated in a specific area. While the product works effectively, you have to continuously use all of the Scotts products during the different seasons.

This will be a little expensive, but you should not need to worry about having any issues with your lawn. I would personally use a killer that is more concentrated first and apply this product to prevent the grass from growing back.

Fortunately, the product is really affordable and you should not need to have any problem when you apply many of the other Scotts products. W would definitely recommend this product for anyone who would like to prevent the growth of crabgrass. However, adding a better killing agent might spice up the product a little.

Pros:

  • Excellent at preventing the growth of crabgrass
  • Really affordable
  • Easy to apply
  • No harmful agents for your plants and normal grass

Cons:

  • Might require an additional killing agent for crabgrass

5. QuinKill Max Crabgrass and Weed Killer

QuinKill Max Crabgrass and Weed Killer

The QuinKill Max Crabgrass and Weed Killer is a relatively new product to the market, but I definitely like the design of the bottle and some of the active ingredients that have been used. The product does not contain anything harmful to your garden, but it can definitely help to get rid of most of the weeds that are frustrating.

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With a very small measuring cup that has been included, you can easily find the ideal quantity. The product is highly concentrated and you will need to ensure that it is broken by a little water. One of these bottles will easily help you treat an area of around 20,000 square feet. This will be more than enough for most average lawns.

Since the product is relatively new, you might not really trust it as of yet. However, we have found it to be effective for killing crabgrass and the results seem to be really fast. You should try the product to see if it will work on your lawn. The measuring cup as w have mentioned will make the application process much easier as well.

In terms of price, it is one of the more affordable products on the market today. We definitely believe you will also have excellent results that could potentially help you take back control of your garden. None of the ingredients will pose any real risk to your animals, but the product is not really waterproof in wet weather conditions.

Pros:

  • Really affordable
  • Covers a massive area for such a small bottle
  • Includes a measuring cup
  • For us, it worked really fast

Cons:

  • The brand is relatively new

6. Bayer Advanced All-In-One Lawn Weed & Crabgrass Killer

Bayer Advanced All-In-One Lawn Weed & Crabgrass

If you are still having troubles with choosing the right product, you should definitely choose something like the Bayer Advanced All-In-One Lawn Weed & Crabgrass killer. It is a not only designed to rid your lawn of crabgrass but will get rid of many of the other weeds as well. The manufacturer claims it can kill up to 200 different weeds.

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It is a concentrated substance that you will need to mix with water. However, with the large 32-ounce bottle, you should be able to make a couple of gallons. We had our own sprayer and this makes the application process much easier as well. It also won’t harm any of your plants and flowers as many people might think.

While it might kill most weeds with just one simple and effective application, you might need to worry that the product will take a little longer to kill many of the crabgrass.

However, once you are willing to exert a little bit of patience, the product will work and you won’t have to deal with crabgrass for quite some time.

As one of the cheapest product we have seen, many people are definitely going to use the product. It will certainly help you achieve the desired results you are looking for. I personally used this at one stage but would have loved if the product had included a decent sprayer. Nevertheless, get this product to take back control of your garden.

Pros:

  • Really affordable
  • Makes many gallons of the killer
  • Effectively kills crabgrass
  • Kills many other weeds as well

Cons:

  • It takes a little longer to clear out the crabgrass

7. Bayer Advanced 704080 All-in-One Lawn Weed and Crabgrass Killer

Bayer Advanced 704080

Next, we have another amazing product from Bayer. The Bayer Advanced 704080 All-in-One Lawn Weed and Crabgrass Killer is designed for every type of lawn or weed that you might have. It can kill up to 200 different types of weeds and grass, giving you great multi-functionality and value for your money.

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The bottle is designed to be ready to use. Since it does not require you to mix the concentrated formula with any water, you can simply apply the product where needed.

This design also enables you to apply on smaller spots and avoid potentially putting your flowers at risk. It also helps to prevent the crabgrass from growing back for quite some time.

My only concern was the small 32-ounce bottle. If this was a concentrated formula, it would have been much better. However, with the small bottle, you frequently need to refill the bottle.

Many users also keep the bottle for mixing other formulas when they are done. I personally thought the innovation was great for long-term use.

The price seems a little steep and the product also needs to be used quite often. If you can buy the other Bayer products that are concentrated, you might find this product to be really beneficial when applying. We would definitely recommend it to smaller yards that do not have such a massive problem with too many crabgrasses.

Pros:

  • Easy to apply
  • Kills more than 200 different weeds
  • Does not harm any of your plants
  • The bottle can be reused

Cons:

  • Quite pricey

8. Spectracide Weed Stop For Lawns And Crabgrass Killer

Spectracide Weed Stop For Lawns And Crabgrass Killer

Spectracide is one of those multifunctional brands that have been known for designing products that will help deter any pests. However, the Spectracide Weed Stop For Lawns And Crabgrass Killer is the ideal combination of a weed preventer and pesticide. This product is small and handy and since it has been concentrated, it can make a lot of this potent poison.

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Mentioning the word poison might have many people jumping up and down, but the product has been tested not to harm any of your normal plants. It will actually work wonders, allowing these plants to be free of any pests.

However, I do not recommend using close to any of your crops or foods that you want to eat.

The product also kills up to 250 different weeds to keep your garden looking great and ensure you do get the best possible results. The only real downside that you need to keep in mind is that the product is restricted in certain states. It is really important to check the label and find out if you are actually allowed to use it.

Pros:

  • Really potent killer
  • Easy to apply with the spray head
  • Removes pests as well
  • Kills up to 250 different weeds
  • Really affordable

Cons:

  • Might be restricted in your state

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

Compare-N-Save Concentrate Grass and Weed Killer

The Compare-N-Save Concentrate Grass and Weed Killer is one of the more affordable options on the market today. It comes in a massive 1-gallon bottle, but you can find the 2.5-gallon bottle if you need to fix up larger areas of grass that you are dealing with. Since it is concentrated, you will need to mix the product with water, but this means it works more effectively.

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The product can be used in wet weather. It will remain rainproof for up to 2-hours when applied. If the rain is not heavy, the product should easily make its way into the sol. This will enable it to kill the weeds from the bottom up. It is also worth noting that it can kill multiple different weeds.

With the effect of it going into the soil, the product will prevent any real problems from occurring as well. A 1-gallon bottle should cover up to 25,000 square feet of your garden, making it ideal for larger homes.

While it can be used around your edible garden plants, we do not really recommend this and you should consult the label for best use around these areas.

Since this is a massive bottle, you might expect the product to cost you a fortune. However, we found it to be really affordable.

You will also be using it for quite some time, which means you don’t need to buy a new one. The only suggestion I have is to add your very own type of spray to the bottle or to buy one separately for easy use.

Pros:

  • Really affordable
  • Covers a massive area
  • Can be used around edibles and special plants
  • Rainproof for up to 2-hours

Cons:

  • No real cons

10. Primesource Quinclorac 1.5L Select (Drive XLR8) Liquid Crabgrass Killer

Primesource Quinclorac 1.5L Select (Drive XLR8) Liquid Crabgrass Killer

Last but certainly not least, we have the Primesource Quinclorac 1.5L Select (Drive XLR8) Liquid Crabgrass Killer and this product also came highly recommended. As with many of the others, it has also been concentrated, which means you will need to mix it with a watery substance before applying it to your lawn.

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What I like is that some of the ingredients will allow you to rid your garden of any stubborn pests that may be bothering. It can easily be applied and with a decent sprayer, you can easily cover large areas of your garden. The product should also remain rainproof for up to 2-hours, allowing you to use it in the rainy season as well.

It is recommended that you apply the product every 21-days. This will ensure the grass does not really get any time to grow. As much as the product is really effective at killing stubborn weeds, I got a little frustrated with them growing back. Using this in conjunction with an effective weed preventer should do many wonders for you.

As many of these larger bottles, they are generally affordable for the quantity that you will be receiving. I personally think this will be the ideal product for commercial grade, ensuring that your garden is always weed free. We definitely recommend it to larger lawns and not near any of your edible product to be on the safe side of things.

Pros:

  • Really affordable
  • Easy to mix and to use
  • Effectively kills most weeds
  • 2-hours rainproof

Cons:

  • Does not really prevent the crabgrass from growing back

Crabgrass Killer vs. Preventer: Important Considerations 

In most of my articles, I like to discuss some of the things you need to look at before you buy the product. This will help you choose a different product if you don’t feel that any of these meet your requirements. Here are the most important things to keep in mind before buying a crabgrass killer for your lawn:

Prevent or Kill:

It is really hard for you to find a product that will do both of these things. However, you should try and determine how often yo0u are available to apply the product. If you are looking for something that will kill and prevent the crabgrass from growing back, you should keep in mind how expensive this endeavor can become.

Will there be any edibles product nearby?

Some of the manufacturers do enable you to choose a product that will not have any real influence on your edibles. However, I like to play it safe and to keep these products away from them. If you need to find an herbal product that keeps the food organic, you should consider finding something else. However, these products are more directed at crabgrass. If it kills other weeds, that is a real bonus.

Additional Features:

As we have just mentioned, many of these products will give you the ability to kill other weeds as well. However, you don’t need to always focus on this. If you have a dandelion problem and a crabgrass problem, you should look for something that is versatile enough. Additionally, this versatility will be quite expensive, as you need to keep in mind as well.

Another excellent feature I always try to look for is if the product will be weatherproof. If your product can be rainproof for around 1-hour, this will make it effective to be used during that wet season as well. As we all know, the rain does fall quite heavily in the summer months in certain areas, making i9t harder to prevent these weeds from growing.

Is the product restricted?

If you are living in an open environment or a large state with large open spaces, you might find the products to be fairly common. However, these products might lead to allergies in sensitive people and this means it has been banned in densely populated areas. Before you buy any product that kills the crabgrass, you should check to see if it is not restricted in your specific area.

Brand:

Last but certainly not least, it will be wise of you to keep the brand in mind as well. There are many knock-off brands on the market today and this will make it hard for you to find a good quality product. People like me have decided to crack down on many of the fake products and I am rather showing the more reliable products to help them build their brand and grow their company.

Takeaway

If you have limited understanding of grass and weed types, this might be a complex article to read. However, I also did not have much information when it comes to many of these things.

Nevertheless, I started taking the time to read and do research and this helped me to understand crabgrass. You should know that after numerous test, these were the top product currently available o0n the market today.

We would like to thank you for reading this article and encourage you to share some of your thoughts on these products. Let us know in the comment section if you have any used any of them. We would also appreciate it if you could share some of your thoughts on them. We look forward to reading some of the insightful thoughts you have to share.

1 thought on “Best Crabgrass Killer & Preventers – 2019 Reviews”

  1. Very interesting comments and I am impressed in the research you have done to cover a wide area for part time gardeners. I only question why you did not cover the use of 10 to 20% Vinegar solutions or Baking Soda which are available in some areas for couch/quack grass. I am reluctant to use Roundup because of the health side effects of this chemical except in unusual times when Poison Ivy is a threat.

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