The 8 Best Weed Killers of 2020

Eliminate pesky plants with these effective treatments

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Does it seem like no matter what you do, you can't quite seem to get rid of the weeds in your garden, yard, or driveway? Weeds are certainly stubborn, and they often bounce back from being plucked or stomped on. If you’re ready to banish weeds for good, it’s time to break out the weed killer, which will help keep your yard happy and healthy.

Here, the best weed killers for backyards, flower beds, gravel walkways, and more.

Best Overall: Roundup Ready-to-Use Weed and Grass Killer

The RoundUp Ready-to-Use Weed and Grass Killer is a great multi-purpose weed killer to use around your home. This particular solution can be used on driveways, sidewalks, patios, flower and vegetable gardens, mulch, and other landscaped areas, making it a versatile solution for all your weed-removal needs. 

This weed killer comes pre-mixed, so it’s ready to use right out of the container. It has a 2-foot wand that delivers continuous spray, and it even features a shield to help contain the solution and protect nearby plants. The weed and grass killer is rainproof in a matter of 10 minutes, and you should start seeing results in as little as three hours. The product has a four-year shelf life, and reviewers say the solution works perfectly on a wide range of weeds, killing them quickly and effectively.

Best for Lawns: Ortho Weed B Gon Weed Killer for Lawns

Are dandelions, clovers, and other invasive plants taking over your lawn? These types of weeds require a special treatment that won’t harm the surrounding grass, and luckily, the Ortho Weed B Gon Weed Killer for Lawns is both affordable and effective. This product comes in 1-gallon jars of concentrated product, and each jar can be used to treat up to 64,000 square feet of lawn. 

This weed killer is effective on more than 250 different types of common weeds, including dandelions, clover, dollarweed, thistle, and more. When used as directed, it won’t cause any harm to the surrounding grass, and the product is rainproof in just one hour. According to reviewers, the Ortho Weed B Gon is incredibly effective, and it will leave your yard lush with healthy grass.

Best Weed Preventer: RM43 43-Percent Glyphosate Weed Preventer Total Vegetation Control

Weeds are resilient, to say the least, and many times they’ll start popping back up within a few days of treatment. To keep weeds out of your yard for longer, you’ll need a product like the RM43 43-Percent Glyphosate Plus Weed Preventer. The 1-gallon container treats more than 17,000 square feet, and it can be used along fences, sidewalks, driveways, buildings, and even on gravel. 

This weed preventer makes up to 21 gallons of spray, and it can be used for either total vegetation control or spot treatment of brush, vines, and weeds. It kills unwanted plants and prevents them from growing back for up to a year, and reviewers say the results are unbeatable—just be careful not to spray it on any plants you want to keep.

Best for Flower Beds: Spectracide Weed and Grass Killer Concentrate

Weeds can hinder the growth of the other flowers in your garden, so you’ll want to get rid of them with a product like Spectracide Weed and Grass Killer, which is designed to be used in flower beds. This product comes in 32-ounce bottles of concentrate that can cover up to 3,000 square feet, and it kills weeds such as poison ivy, clover, dandelions, and more. 

This product can be used on driveways and walkways, around trees and shrubs, and in flower beds, and the formula is waterproof 15 minutes after application. You should see visible results in as little as three hours, as it kills weeds down to the root. Reviewers say this weed killer works quickly, but many warn you’ll want to take care not to get it on your lawn, as it will also harm grass.

Best Natural: Green Gobbler Organic 20% Vinegar Weed & Grass Killer

Most weed killers contain toxic chemicals, and if you have pets or children who frequently play in the yard, you might feel more comfortable with a natural product like Green Gobbler Vinegar Weed and Grass Killer. This organic product uses acetic acid and corn-based ethanol to tackle unwanted weeds, and it can be used pretty much anywhere, from driveways and sidewalks to mulch and flower beds. 

The Green Gobbler Vinegar Weed and Grass Killer is four times stronger than traditional table vinegar, and it contains no toxic chemicals. It can be used to eliminate weeds like crabgrass, dandelions, clover, and more, and you should see results in around 24 hours. Reviewers love that this product is safe, effective, and affordable, and many say you can even dilute it to make each bottle last longer.

Best for Large Areas: Compare-N-Save Grass and Weed Killer Glyphosate Concentrate

If you need to treat a large area, you’ll want a product like the Compare-N-Save Concentrate Grass and Weed Killer, which can cover up to 25,000 square feet per container. The 1-gallon jar makes up to 85 gallons of ready-to-use spray, and it can be used on driveways and walkways, along fences, around flower beds, and even in vegetable gardens.

This product contains 41 percent glyphosate and delivers results in around two to four days. It’s rainproof two hours after application, and you’ll want to avoid spraying it on your lawn, as it will harm grass. The solution kills weeds down to the root, and reviewers say it’s incredibly effective, writing that one container goes a long way, often lasting for years.

Best for Gravel: Roundup Ready-to-Use Extended Control Weed and Grass Killer

Are weeds popping up all throughout your gravel driveway or walkway? You can kill them for good with the Roundup Ready-to-Use Extended Control Weed and Grass Killer. This dual-action formula is safe to use on driveways, sidewalks and patios, along fences, foundations, curbs, and the edge of lawns; and on decorative rock or gravel areas. Not only will it kill existing weeds, but it also prevents new ones from growing for up to four months. 

This product comes in 1.33-gallon containers with a convenient spray wand that delivers a continuous stream for more accuracy. It kills weeds down to the root, delivering results in as little as three hours, and it’s rainproof just 10 minutes after application. Reviewers say this product is easy to use and convenient, but some say it may take a few applications to banish truly stubborn weeds.

Best Weed Torch: Red Dragon Mini Weed Dragon Propane Vapor Torch Kit

If you don’t want to spray chemicals around your lawn, another way to kill off weeds is with a weed torch. Products like the Red Dragon Mini Weed Dragon Propane Torch Kit allow you to kill unwanted plants using a precise burst of flame—no herbicides necessary! 

This lightweight propane torch runs on 1-pound propane cylinders, making it lightweight and easy to carry. All you have to do is pass the torch over unwanted weeds, and the intense heat will cause them to wilt. Within a few days, the plants will die, allowing you to pull them up. You can use this method on driveways, sidewalks, gravel, and along fences—just stay away from any easily flammable materials—and reviewers say the Mini Weed Dragon is extremely easy to use and effective. Plus, many like that it saves them from having to apply chemicals to their lawns.

Final Verdict

The best product for eliminating weeds is the Roundup Ready-to-Use Weed and Grass Killer (view at Home Depot), which can be used in a multitude of areas (i.e. around flower beds, along fences) and works fast. For a product that’s a bit more preventative, the RM43 43-Percent Glyphosate Plus Weed Preventer (view at Home Depot) gets down to the roots and stops weeds from sprouting for up to an entire year.

What to Look for in a Weed Killer

Plant Type Not all weed killers target the same plant species. If you need to kill weeds in your lawn, look for a selective formula that won't kill grass along with the weeds, and if you're using weed killer in your vegetable garden, make sure it's approved for use around edible plants. If you prefer to get rid of all vegetation, a non-selective formula is the best way to go.

Longevity Do you want your weed killer to work once, or would you prefer a formula that keeps vegetation from growing back for up to a few months? Check the information carefully so you know which kind of formula you're getting, especially if you're using a non-selective formula and plan to introduce new plants into the area at a later time.

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