Specs are compiled from manufacturer listings and verified buyer reviews and can change over time — please confirm the key details on the product page before buying.
Crabgrass turns a pride-worthy lawn into an eyesore faster than any other invader. You need a killer that actually reaches the roots without torching the grass you want to keep, and that is exactly what this guide sorts out — no guessing, just the real products that deliver.
I’m Rikta — the founder and writer behind Lawn Gear Lab. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
Whether you are fighting a full-blown invasion or just a few stubborn patches, picking the right crabgrass killer for lawns depends on understanding which active ingredient matches your turf type and how fast you need results.
Quick Picks
- BASF Drive XLR8 Crabgrass Killer — Best Overall
- GORDON’S Trimec Crabgrass Plus Lawn Weed Killer Concentrate — Premium Pick
- Primesource Quinclorac 1.5L Select Liquid Crabgrass Killer — Best Value
- Quali-Pro Quinclorac 1.5 L (1/2 Gal.) — Professional Grade
- Select Source Triad QC Select – 3-Way Herbicide with Quinclorac — Multi-Purpose
- Ortho WeedClear Lawn Weed Killer Ready-To-Use with Comfort Wand — Budget Champion
How To Choose The Best Crabgrass Killer For Lawns
Crabgrass is a fast-spreading annual grassy weed that germinates in bare or thin spots of your lawn. The right killer stops it without setting back your turf — the key is picking a product built for your grass type and your patience level.
Active Ingredient: The Real Muscle
Most effective crabgrass killers use Quinclorac, a selective herbicide that targets grassy weeds while leaving lawn grasses like Bermuda, Fescue, and Kentucky Bluegrass alone. Some products also add 2,4-D and Dicamba to hit broadleaf weeds at the same time. Always check the label to confirm your turf type is listed.
Ready-to-Use vs. Concentrate
A ready-to-use bottle with a spray wand is fastest for small patches — you just point and squeeze. A liquid concentrate requires mixing with water in a pump sprayer but covers a much larger area for less money per square foot. Concentrates also let you add a surfactant (a soap-like additive that helps the chemical stick to the weed’s leaves).
Speed of Action
Some products show visible wilting in a day or two; others take up to a month to fully kill the weed. Faster products are more aggressive and usually require a surfactant to be effective. If you are willing to wait, a slower product is often gentler on the surrounding lawn.
Quick Comparison
| Model | Best For | Coverage | Liquid Volume | Active Ingredient | Amazon |
|---|---|---|---|---|---|
| BASF Drive XLR8 | Fast Results | 1,000 sq.ft. | 64 oz | Quinclorac 18.92% | Amazon |
| Primesource Quinclorac 1.5L Select | Broad Weed Spectrum | 500 sq.ft. | 64 oz | Quinclorac 18.92% | Amazon |
| GORDON’S Trimec Crabgrass Plus | Large Lawns | 20,000 sq.ft. | 128 oz | 3-Way Herbicide | Amazon |
| Quali-Pro Quinclorac 1.5 L | Golf Course & Sod Farms | 1,500 sq.ft. | 64 oz | Quinclorac 17.79% | Amazon |
| Select Source Triad QC Select | Multi-Weed Control | Various Sites | 32 oz | 2,4-D / Dicamba / Quinclorac | Amazon |
| Ortho WeedClear Comfort Wand | Easy Spot Treatment | 10,644 sq.ft. | 1.33 gal | 2,4-D / Dicamba / MCPP | Amazon |
In‑Depth Reviews
1. BASF Drive XLR8 Crabgrass Killer
The fast-acting concentrate that shows dying crabgrass in as little as two days.
You get the benefit of seeing results quickly — buyers report the product “killed massive crabgrass explosion in 2 days, lawn looked dead in 2 weeks,” with no damage to the actual grass. That speed comes from its unique water-based formulation, which the maker says delivers faster plant uptake than oil-based competitors. Each 64-fluid-ounce bottle covers 1,000 square feet, and the residual protection lasts up to 30 days so new germinations are stopped before they establish.
One trade-off is coverage — the 1,000 sq.ft. rating is far below the Ortho WeedClear wand’s 10,644 sq.ft., so this is a spot-treatment product rather than a whole-lawn spray. Reviewers also note that clover is unaffected, and a surfactant is essential for the chemical to stick to the leaves. The weight of the bottle is 65 Ounces versus the Ortho’s 195.68 Ounces, so mixing and carrying is easier on your back.
Real-World Speed
- Visible results reported in 2 to 4 days after application
- Up to 30 days of residual control keeps new crabgrass from coming back
- Safe on both warm-season and cool-season turf grasses
Honest Limitations
- Coverage is limited to 1,000 square feet — not for large lawns
- Requires a surfactant for best results, which is an extra purchase
- Does not kill clover or some broadleaf weeds
Reach for this if: you have a crabgrass explosion and want visible death within a few days, not weeks.
Look elsewhere if: your lawn is larger than 1,000 sq.ft. of weed coverage — you will need multiple bottles or a higher-volume concentrate.
2. GORDON’S Trimec Crabgrass Plus Lawn Weed Killer Concentrate
A massive 1-gallon jug that covers 20,000 square feet — best for big lawns.
This 3-way herbicide blend controls emerged grassy weeds (crabgrass, foxtail, signalgrass) plus more than 200 common broadleaf weeds like dandelions and plantain. The liquid volume is 1 Gallon (128 fluid ounces), making it the largest single unit on this list. For context, the Ortho WeedClear ready-to-use wand is 1.33 gallons while this one is 1 gallon, but because this is a concentrate you mix with water, the actual coverage jumps to 20,000 square feet.
Owners mention “been using for 2 seasons now in tow behind sprayer” and that it “clears up unwanted weeds very good” while not killing the grass when used as directed. Another reviewer says it is the “only product I have to put on once a year” to keep the lawn free of weeds and crabgrass until the following season. The weight is comparable to the Ortho ready-to-use at roughly the same gallon volume, but you carry the concentrate lighter because you mix it onsite.
The Acreage Advantage
- 20,000 square feet of coverage from one bottle — the biggest on this list
- Controls 200+ broadleaf weeds in addition to crabgrass
- Concentrate format means less plastic waste per treatment
What to Expect
- Clover is more resistant — customers note it is still hard to eliminate
- You need a sprayer (pump or tow-behind) — not a simple wand
- Results take longer than the fastest Quinclorac-only products
Grab it for: a large property where you want one annual application to keep the entire lawn clean of crabgrass and broadleaf weeds.
Pass on it if: you only have a few patches — a smaller concentrate or a ready-to-use wand is less wasteful and easier to store.
3. Primesource Quinclorac 1.5L Select Liquid Crabgrass Killer
A highly concentrated Quinclorac that kills crabgrass in under a week while leaving your lawn untouched.
This 64-fluid-ounce bottle uses the same 18.92% Quinclorac concentration as the BASF Drive XLR8 but is labeled for a smaller coverage area of 500 square feet — making each drop more potent when spot-treating. Reviewers point out “crabgrass dying by day 4, lawn grass unharmed” when mixed with MSO surfactant and blue dye. Another reviewer saw “crabgrass dying in 3 days, dead in a week” using 4 oz mixed with 2 gallons of water and a squirt of Dawn soap.
The liquid volume matches the BASF Drive XLR8 bottle at 64 ounces, but the Primesource covers 500 sq.ft. versus 1,000 sq.ft. for the BASF. That means you are paying for a higher concentration per square foot, which is exactly what you want for stubborn patches of mature crabgrass that have already developed multiple tillers. The weight is comparable to the BASF at roughly 65 ounces.
Concentration Power
- Strong 18.92% Quinclorac concentration — kills large and smooth crabgrass, foxtail, torpedograss, and more
- Safe on residential turfgrass — buyers confirm fescue and Bermuda are unharmed
- Can be used with a surfactant and dye for precise, visible coverage
Coverage Caveat
- Only 500 square feet per bottle — the smallest coverage on this list
- Heat makes application difficult — one reviewer noted it was hard to spray in high temps
- Requires mixing with MSO or surfactant, which is not included
Ideal for: small, heavily infested patches where you want maximum chemical strength per drop to knock out mature crabgrass fast.
skip it if: you plan to treat a large area — the 500 sq.ft. coverage means you will need multiple bottles or a different concentrate with a bigger footprint.
4. Quali-Pro Quinclorac 1.5 L (1/2 Gal.)
A turf-industry standard that kills crabgrass in about 4 days and works across golf courses, sod farms, and residential lawns.
This 64-fluid-ounce bottle contains 17.79% Quinclorac and is designed for both residential and non-residential turfgrass, including golf courses. It covers 1,500 square feet, which splits the difference between the Primesource (500 sq.ft.) and the BASF Drive XLR8 (1,000 sq.ft.). Shoppers say “visible crabgrass kill in ~4 days” with spot spray and MSO surfactant, and that a little goes a long way — one user says it “dramatically reduced dandelions from tens of thousands to ~20 over 3 years.”
One trade-off noted by reviewers: while it kills crabgrass, it does not touch clover. Another reviewer mentions that MSMA worked better in their experience, with Quinclorac achieving about an 80% kill rate on mature plants. The concentration is slightly lower than the Primesource (17.79% vs 18.92%), but the wider coverage area per bottle makes it a better fit for medium-sized lawns.
Turf-Tough Performance
- Labeled for golf courses, sod farms, and residential lawns — broad site compatibility
- 1,500 sq.ft. coverage per bottle — the best middle ground for medium lawns
- Buyers confirm it kills mature crabgrass regardless of tiller count
Where It Falls Short
- Does not kill clover — you will need a separate broadleaf herbicide
- Some users report only ~80% kill rate on mature crabgrass, requiring a second application
- A surfactant is necessary for rainfastness and leaf adhesion
Best suited for: homeowners who want a professional-grade product that handles both residential and high-end turf like golf course roughs.
Not your match if: you have a tiny patch of crabgrass — the 64 oz bottle is more than you need for small jobs.
5. Select Source Triad QC Select – 3-Way Herbicide with Quinclorac
A three-active-ingredient formula that hits crabgrass, dandelion, and clover all at once.
This is the only product on the list that combines Quinclorac with 2,4-D and Dicamba — three active ingredients in one quart bottle (32 fluid ounces). That triple action means it controls grassy weeds like crabgrass AND broadleaf weeds like dandelion and clover, which the pure Quinclorac products miss. The liquid volume is 32 oz versus 64 oz for the BASF Drive XLR8, so you get a smaller bottle but a wider weed spectrum.
Buyers report it is “effective on Dallisgrass (purple tips in 1 week, dead in 2)” when used with a surfactant and dye. Another notes it is the “only product that kills crabgrass safely in Bermuda” but that it takes weeks — slower than glyphosate but safer for the lawn. The trade-off: it is less effective on some crabgrass species according to reviewers, and the small 32-ounce bottle is best for spot treatment rather than whole-lawn broadcast.
Triple-Threat Chemistry
- Controls both grassy weeds (crabgrass) and broadleaf weeds (dandelion, clover, wild violet)
- Safe on Bermuda grass — buyers confirm no damage when used as directed
- Labeled for residential lawns, athletic fields, roadsides, and select golf turf areas
Speed vs Power
- Slower than pure Quinclorac products — crabgrass takes weeks to die
- 32-ounce quart is small compared to the 64-ounce and gallon options
- Not a 5-star for standard weed control per one buyer — weaker on crabgrass and wild violets
Pick this if: you have a mixed invasion of crabgrass plus broadleaf weeds and want one product to handle both.
Avoid it if: you are impatient with crabgrass — the pure Quinclorac options kill it in days, this one takes weeks.
6. Ortho WeedClear Lawn Weed Killer Ready-To-Use with Comfort Wand
The no-mix, no-fuss spot sprayer that comes in a 1.33-gallon container with a battery-powered wand.
This is the only ready-to-use product on the list — the 1.33-gallon container includes a battery-powered Comfort Wand so you never have to mix, pour, or clean a sprayer. The coverage is the largest of any product here at 10,644 square feet, versus 1,000 square feet for the BASF Drive XLR8. The formula kills crabgrass, dandelion, clover, chickweed, and creeping charlie down to the root, often with one application. The weight is 195.68 Ounces versus 65 Ounces for the BASF, but the battery wand eliminates the pump-sprayer effort.
The honest catch: owners mention it is “effective but slow weed killer (1 month to fully kill).” Some recent batches have drawn complaints — one buyer mentioned two cartons “completely ineffective” with no chemical smell. It works best on young, actively growing weeds when applied between 45°F and 90°F, and on grass types including Bermudagrass, Fescues, and Kentucky Bluegrass.
No-Sprayer Convenience
- Ready-to-use with a battery-powered Comfort Wand — no mixing or cleanup
- 10,644 square feet of coverage from one container — the largest footprint
- Safe for multiple lawn types: Bermuda, Fescue, Bluegrass, Ryegrass, and Zoysia
The Waiting Game
- Very slow-acting — customers note it takes up to a month to fully kill weeds
- Some batches seem to lose effectiveness — recent reviews mention no results at all
- Heavy at 195.68 Ounces — the pre-mixed liquid plus wand makes for a bulky container
Great for: anyone who hates mixing chemicals and wants a grab-and-go wand for spot-treating small-to-medium patches around the yard.
pass on it if: you need fast results or have a large crabgrass explosion — the concentrates kill in days, this takes a month.
Understanding the Specs
Quinclorac Concentration
This is the active ingredient percentage that determines how much chemical you are applying per drop. Products on this list range from 17.79% to 18.92% — higher numbers mean you can mix a smaller amount per gallon of water to get the same killing power. If you are treating mature, multi-tiller crabgrass, a higher concentration with a surfactant gives the best chance of a one-shot kill.
Coverage Area
Listed in square feet, this tells you how much lawn one full bottle treats at the label’s recommended mix rate. A 500 sq.ft. bottle is for spot treatment of small patches. A 20,000 sq.ft. concentrate is for whole-lawn broadcast. Match the coverage to the size of your infestation — you waste money buying a huge jug for a handful of patches, and you waste time buying a tiny bottle for a full lawn.
Surfactant Requirement
A surfactant is a spreader-sticker additive that helps liquid herbicides penetrate the waxy leaves of crabgrass and resists wash-off from rain or irrigation. Many Quinclorac products strongly recommend (or require) a surfactant like MSO (methylated seed oil) to achieve full results. If the product you choose lists surfactant as recommended, budget for the extra cost — skipping it is the most common reason for poor results.
Turf Type Compatibility
Not all grass types tolerate Quinclorac. Bermuda grass, Fescue, Kentucky Bluegrass, Ryegrass, and Zoysia are usually safe. St. Augustine grass and Centipede grass are sensitive — you must check the label’s approved grass list before spraying. Using the wrong product on a sensitive lawn can kill large patches of your turf alongside the crabgrass.
FAQ
Does Quinclorac kill crabgrass without killing my lawn grass?
How long does it take for a crabgrass killer to work?
What is a surfactant and do I really need one?
Can I use a crabgrass killer on a lawn that has clover?
What is the difference between a concentrate and a ready-to-use spray?
Is it safe to apply crabgrass killer in hot weather?
How long should I wait to overseed after using a crabgrass killer?
Will a crabgrass killer also kill dandelions and broadleaf weeds?
How much surfactant should I use with Quinclorac?
Why did my crabgrass killer not work on some patches?
Final Thoughts: The Verdict
For most people, the crabgrass killer for lawns winner is the BASF Drive XLR8 because it kills crabgrass visibly in a matter of days, provides up to 30 days of residual protection, and is safe on nearly all common turf types when used with a surfactant. If you have a large lawn that needs whole-area treatment with just one application per year, grab the GORDON’S Trimec Crabgrass Plus for its 20,000-square-foot coverage. And for the no-mix, grab-and-go convenience of spot-treating small patches, the standout is the Ortho WeedClear with Comfort Wand — just be prepared to wait a month for the full kill.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of July 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
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