11 Best Commercial Weed Killers 2020 with Full Buyer’s Guide

Right, soldier, that’s it. You’ve had enough.

You’ve tried just about everything to destroy nuisance weeds and unwanted vegetation from your property, but it just doesn’t know when it’s beat.

It’s hunkered down and dug in like an Alabama tick.

And while you’ve shed blood, sweat, and tears on this mission, it’s time you radioed in for the big guns.

Enter the best commercial weed killers of 2020.

You’re not messing around anymore – the kid gloves are off. Reinforcements are about to rain liquid death down on your adversaries.

Read on to discover the most potent weed killers available on the market for residential use with a buyer’s guide thrown in as back up.

I love the smell of a dead weed in the morning.

11 Best Commercial Weed Killers 2020

Compare-N-Save Grass And Weed Killer

Starting us off on our march towards freedom from weeds, is this budget-friendly herbicide concentrate from Compare N Save. Never too far away from “the best” reviews, this product has proven time and again that it can literally be compared to the brand names and still provide similar results.

Made with a high 41% glyphosate solution, it’s designed for use on patios, walkways, fence lines, and around the garden to give you visible results within two to four days.

This one-gallon container will mix up to 85 gallons of spray solution that can treat around 25,000 square feet. If you need a weed killer that will get the job done for just a bit more than a handful of loose change – this option is hard to beat.

Pros

  • Outstanding price.
  • Potent formula.
  • Fast-acting.
  • Good coverage.
  • Rainproof in two hours.

Cons

  • Contains glyphosate.

Conclusion

This highly recommended weed killer garners a lot of well-deserved praise, and at this price – compared to the big brands – you simply can’t go wrong.

Crossbow Concentrate Brush and Weed Killer

Another commercial herbicide offered at an excellent price point, this option is a concentrated brush and weed killer for use anywhere you need to be completely clear of undesirable plant life. It’s a decent alternative to using a glyphosate solution, made with the active ingredient of 2,4-D acid.

Designed to control unwanted trees and brush, it will also tackle most broadleaf weeds across a range of non-crop areas and industrial sites.

Manufacturer Southern Ag is a reputable company when it comes to making high-quality herbicide, and this formula is no exception. It’s also a selective herbicide, having little effect on grasses if used correctly.

Pros

  • Outstanding price.
  • Highly rated.
  • Covers up to one acre.
  • Tough, potent formula.

Cons

  • You might need a little patience.

Conclusion

Crossbow is a popular weedkiller from a highly-regarded agricultural chemical company. And like the Compare N Save product, for the price you could do a lot worse.

Sedge Ender Concentrate

This is a lawn-friendly weed killer that has been specifically designed to target sedge grasses and other nuisance lawn weeds. It will destroy yellow nutsedge and crabgrass, as well as numerous other pesky invaders, for use on warm and cool-season grasses.

Nutsedge is a particular nuisance and a troublesome adversary and often needs a dedicated herbicide to ensure it is kept at bay. With this product, Bonide offer results within a couple of days, so long as you use them as directed, and do your best to keep it away from desirable plants – even though it is a selective weed killer.

They also have some great options for killing Bermuda grass, so follow that link if you need some help with that troublesome menace.

Pros

  • Name to trust in herbicides.
  • Good price.
  • Highly rated.

Cons

  • Mixing instructions are a little confusing.
  • Make sure it will work in your grass region.

Conclusion

Possibly the best commercial-grade nutgrass and nutsedge weed killer there is, this will certainly get the job done – but a little thought needs to go into planning and preparation before you unleash death on your lawn.

Natural Armor Weed and Grass Killer

In an industry that’s often awash with harsh chemicals and formulas, it’s always nice to offer a milder option – especially if you’re looking for a strong weed killer and you have children and/or pets.

This offering from Natural Armour is 100% glyphosate free, made from all-natural ingredients to treat over 250 species of weeds and grass anywhere on your property. There’s no need to dilute or mix – you simply spray directly on to the plants and let the formula work its magic.

Probably the best commercial organic weed killer available.

Pros

  • Eco-friendly.
  • No harsh chemicals.
  • Easy to use.
  • Rapid results.

Cons

  • Just not as strong as the more potent herbicides.

Conclusion

This is a great option if you prefer not to use harsh chemicals on or around your property, and it’s one of the best commercial weed killers safe for pets on the market. There is a potential trade-off for trying a non-toxic solution, however, and you might find you get mixed results.

RM43 Glyphosate Plus Weed Preventer

Here we have a classic example of a commercial total vegetation control product, that incorporates a powerful weed killer and preventer.

A persistent herbicide, RM43 will not only destroy all vegetation it comes into contact with, but it will keep any treated site weed-free for up to one year.

You’re guaranteed excellent coverage, too, as one gallon is capable of 17,297 square feet of weed control.

Ideal for use along fence rows, and around farm buildings and barns, this is an industrial-style herbicide that you can use in the home – just make sure you take great care when and where you dispense it.

Pros

  • Highly rated.
  • Potent formula.
  • It can be used as spot control.
  • Kills to the root.

Cons

  • High glyphosate concentration.

Conclusion

One of the best commercial grade weed killers available today, RM43 doesn’t mess about. Remember that it’s a weed preventer, too – so nothing will grow on any treated spot for the foreseeable future.

Quali-Pro Prodiamine Pre-Emergent Herbicide

Prodiamine 65 is a pre-emergent herbicide to provide you with excellent grass and broadleaf weed control. Ideal for use in both spring and fall, you can achieve season-long protection against crabgrass and other undesirable weeds in your desirable turfgrass.

A professional product, it’s best for use around nurseries, trees, established perennials, and wildflower plantings, and any non-crop region you wish to control annual bluegrass (poa annua), henbit, knotweed, chickweed, spurge, foxtail, and goosegrass.

One of the best commercial weed killers for lawns there is, and a solid alternative to more well-known brand names.

Pros

  • Highly rated.
  • Excellent coverage.
  • Won’t clog sprayers.
  • Mixes well.

Cons

  • No use on existing weeds.
  • The instructions aren’t designed for treating smaller properties and areas.

Conclusion

A top-quality pre-emergent herbicide that is perfect for literally nipping unwanted grasses in the bud. You might need to break out the calculator to figure sprayer quantities if you don’t have much area to cover.

Round Up Pro Concentrate Systemic Herbicide

Now, this is interesting. This particular product is called Roundup Pro, and at 50.2% it has one of the highest amounts of glyphosate as the active ingredient in any commercially available weed killer (with Roundup Quik Pro being the only one higher).

However, it’s manufactured by Monsanto, a company that is actually no more, and one that has something of a checkered past – including controversies surrounding Roundup itself.

It seems this very potent, post-emergent herbicide is still readily available, so it’s up to you to decide if you’re happy using it on and around your property with a clear conscience.

Pros

  • No doubting the commercial standard.
  • Very powerful.
  • Highly rated.

Cons

  • Questionable history.
  • Very high glyphosate percentage.

Conclusion

Where weed killers actually come from can be just as confusing as the types of weed killers themselves, and not least because of the continued debate surrounding Monsanto. I will leave it to you to form your own opinions, but either way, this is a devastatingly effective weed killer, nonetheless.

Tenacity Turf Herbicide

Although this looks like it comes in such a small quantity (a syringe is included), this eight-ounce bottle is actually deceptively potent and will make up to 96 gallons of herbicide with 1/2 a teaspoon per gallon of water.

It should last you a long time with correct use.

Designed as both a pre-emergent and post-emergent herbicide for the selective contact and residual control of weeds in turf grasses, it will tackle over 46 nuisance broadleaf and grass species.

Tenacity’s active ingredient is 40% mesotrione, which is a naturally occurring compound – so you’re not using any harsh chemicals here. Very highly rated, this is a professional-grade product that will help you achieve excellent results for your lawns.

Pros

  • It works!
  • A little goes a long way.
  • Versatile.

Cons

  • Initially expensive for the quantity.
  • Might need a surfactant for best results.

Conclusion

A top quality herbicide for controlling unwanted plant life in your lawn, you’ll soon have turf looking like a putting green. Just read the label carefully and use it strictly as directed.

Top tip – ditch the syringe (it is known to clog easily) and use an ordinary teaspoon when measuring out the right quantities.

Milestone Specialty Herbicide

Milestone is another broad-spectrum weed killer for use on noxious and invasive species that appear in your lawn.

Best used to attack broadleaf weeds, like the Tenacity, it kills by both a post and pre-emergent effect, offering a super-fast knockdown within 24 hours, and long-lasting, residual control so weeds don’t come back.

No mixing is required, and it’s selective on most warm and cool-season grasses. Designed for commercial and agricultural use, it’s a potent weed killer that will also kill trees and shrubs should you require it to do that.

Another highly rated herbicide that will do the job it’s supposed to do – and then some. Just be careful you’re not spraying it on a windy day.

Pros

  • Very successful formula.
  • Easy to use.
  • Excellent coverage.
  • Cost effective compared to brand names.

Cons

  • Not available in certain locations.
  • Overkill for many residential yards and gardens.
  • Expensive upfront.

Conclusion

Control nuisance weeds and grasses in your turf for over a year with a decent application of this excellent, residual selective herbicide that has received a lot of praise for professional results. Again, adhere to the instructions carefully.

Roundup Weed and Grass Killer Super Concentrate

Here we have our last Roundup product which is their best concentrated weed killer for controlling widespread unwanted plant problems.

With a high percentage of glyphosate and designed for use in tank sprayers, you can cover a lot of ground and keep weeds at bay with one of Roundup’s most potent products available for residential use.

Ideal for use around flowers, shrubs, and trees, on patios, walkways, driveways, gravel areas, and mulch beds and along fences, edging and foundations, it’s rainproof within 30 minutes and you’ll see results in two to four days.

Cover 25,500 square feet and eradicate weeds from your property with this potent, post-emergent formula.

Pros

  • Highly rated.
  • Kills everything to the root.
  • Best for large areas.
  • Tried and tested results.

Cons

  • High glyphosate percentage.
  • Expensive.

Conclusion

It does what it says on the tin – because it’s Roundup. Love it or hate it, there’s no denying it will kill just about anything green it comes into contact with, and their super concentrate is the best for large yards and gardens.

GrazonNext HL Herbicide

Grazon Next HL is a specialty herbicide that has been designed to kill more than 100 species of broadleaf weeds, including the hard-to-control perennials we all struggle with – such as nightshades, Canada thistle, horsenettle, and Texas bull nettle sharper.

Offers a fast burn-down all season long, and is safe to use on desirable grasses such as fescue, Bahia grass, and Bermuda grass – should it be required.

With no grazing restrictions regarding livestock, it’s designed for farm and agricultural use – but you can also have these benefits at home. Check out the very impressive reviews for this product and make your own mind up.

Pros

  • Highly rated by the pros.
  • Kills a large variety of weeds.
  • Good against nettles.
  • Animals can graze a day after application.

Cons

  • Unavailable in certain locations.
  • A surfactant might be required.
  • Expensive.

Conclusion

One of the best commercial herbicides on the market for weed control without destroying desirable grasses. Again, just be aware of mixing quantities and application methods in the right conditions.

How to Choose the Best Commercial Weed Killer

Green grass with white petaled plants

There’s a lot to consider before you add your chosen commercial weed killer to the cart. Below, you’ll find a buyer’s guide that explains everything you should be looking out for.

Strength/Active Ingredients

Since we’re talking about commercial weed killers, perhaps the most important thing to consider is just how strong the product is.

Commercial herbicides are designed to be used by farmers, landscape professionals, around industrial and commercial sites, and at sport and leisure facilities – such as golf courses.

And these folks aren’t messing around – they want this nuisance vegetation dead.

With that in mind, you’ll find these products often contain some of the harshest chemicals and compounds – including the infamous glyphosate – which has been making headlines around the world in recent years.

There’s no doubt its ability to kill plants, but it’s the potential effects on humans and animals that are causing a stir.

When choosing a commercial herbicide for use around your home, check the active ingredients and their potency, and take great care when applying products of this strength.

Take into consideration water run-off, where you’re applying these chemicals, and if you have children or pets running around.

And if you prefer something a little milder, check out this review of the best pet-safe weed killers on the market.

For more information, and a short, crash-course in herbicide basics (including a word on the strength) check out the video below.

Selectivity

Another of the most important factors to consider when choosing a weed killer is in understanding what it is actually going to kill.

A selective weed killer will only attack certain plants and vegetation while leaving other species alone.

For residential purposes, perhaps the best use of a selective herbicide is on your lawn – where you certainly don’t want to kill off the desired grass, but you want to rid yourself of an invasive weed.

Of course, if you prefer not to use anything potentially harsh on your lawn, have a read of this article on how to remove weeds from your lawn without chemicals.

A non-selective weed killer will eliminate just about everything green that it comes into contact with.

They are the most potent of herbicides and should be used with great care, particularly around plants and vegetation that you want to keep.

Non-selective herbicides are ideal for use over larger areas where you simply want everything dead, and you’re not risking killing off anything desirable.

Aside from understanding selectivity, it’s also worth noting if the weed killer you’re interested in actually kills the species you want to remove.

Checking the label, reading online reviews, and listening to feedback from people who have actually been successful/unsuccessful with the product is an excellent way to figure out if it’s right for you.

For example, nettles can be an obnoxious, nuisance weed that are difficult to eradicate, so check out this dedicated article on how to get rid of nettles for more in-depth advice.

Pre/Post-Emergent

The life of a weed also needs to be understood (at least by the boffins in the chemical biology labs) in order to know how best to kill it.

With this in mind, three types of herbicide are readily available and are explained below.

Pre-plant herbicides will be used well before any weeds have had the chance to germinate, and in areas where a desirable crop is to be planted in the future.

Pre-emergent herbicides will kill the weed growth before germination, or before you see any vegetation breaking through the soil.

Post-emergent herbicides are specifically designed to destroy any existing and visible weeds that have sprouted and taken hold.

It should also be noted that post-emergent herbicides will either be ‘contact’ or ‘systemic.’ A contact herbicide will only kill what it touches, whereas a systemic herbicide will make its way through the plant and kill it from the root.

All commercial weed killers will fall under one of these categories, and it’s up to you to decide which you think will work best for your situation.

Persistence

Close up of dandelion

When talking about the persistence of a weed killer, it’s simply referring to the length of time it will stay active in the soil after application. You will notice there are two types.

Persistent herbicides will prevent weeds from regrowing over a set period of time. This can vary from a few days or months, to up to a year and possibly more – depending on the strength.

Also called residual weed killers, they reside in the soil and are generally used in areas you want to keep clear of all plant life for as long as possible – without the need for further chemical application. Clearing weeds from driveways is a good example.

Non-persistent herbicides are exactly the opposite. They do not prevent any future regrowth, so plant life will come back to the treated area eventually.

While this might seem disadvantageous for weed killing, it’s more so that future crops can be planted in that soil.

Which type you choose will depend on what you want to achieve in certain areas around your garden over time.

Quantity

Commercial herbicides usually come in large quantities as more often than not they’re required to cover enormous areas.

Having said that, you can still purchase these formulas in smaller amounts, in spray or trigger guns, for example, to spot-treat, particularly stubborn weeds.

Remember, purchasing larger quantities will be more cost-effective in the long-run, but always choose the amount that suits your property and weed murdering requirements.

Application Methods

As well as coming in a variety of quantities, commercial weed killers are available in a variety of states and require suitable application methods to dispense destruction.

For smaller areas, trigger or spray guns will be suitable – especially if you just need to spot-treat one or two weeds.

If you need a step up from this, larger bottles are available that often come with their own spray applicator nozzle.

When treating lawns, granular weed killers are more common and are dispensed by using a lawn or seed spreader. They can also be useful around flower beds.

For larger areas, tank or backpack sprayers work best, usually with some kind of concentrate liquid herbicide that you need to dilute with water before applying.

And some herbicides require (or work best with) a surfactant – which changes the surface tension of the liquid and the target area it’s being applied to. This greatly helps it to penetrate the surface for more successful results.

A Note on Brand Names

If you were to ask anyone to name a weed killer, the chances are they would respond with “Roundup.”

While it’s the most famous brand name herbicide (certainly in the US and Canada), does it necessarily make a difference when it comes to actual results?

The answer is no.

Being the most well-known doesn’t always equate to being the best.

Having said that, there’s no doubting Roundup’s pedigree for weed massacre, it’s just that similar weed killers with almost identical ingredients also exist.

This is especially true after the glyphosate patent expired back in 2000 – and anyone can use that chemical formula in their weed killer products should they so wish.

In short, in the weed-killing world, although the brand name products have established themselves a loyal customer base – what works for one gardener might not work for you.

It might be worth a bit of trial and error – and you could end up discovering something that provides excellent results at a fraction of the cost.

Summary

Choosing the right herbicide for your needs isn’t as straightforward as you might think, as there are all kinds of products and formulas on the market, as the multiple gardening situations and scenarios that they cover.

But if you really just want to kill those pesky plants stone dead, then you need to add the best commercial weed killer to your ranks.

I hope this article has helped you discover the one that’s right for you, and let me know in the comments which product you have chosen and why.