
Product Reviews
Best Weed Killer for Lawns: Match It to the Weed
There is no best weed killer for lawns, only the right one for your weed: the seven chemistries that matter, what each kills, and the one that kills grass too.

Non-Selective Ready-to-Use Herbicide (wand sprayer)
★★★★☆ 3.5/5
our editor rating how we score4.4/5 from 5,276 shoppers at Amazon — their number, not ours.
$22–$28
Typical price · 1.33 gal ready-to-use; up to 10 minutes of continuous spray per pump cycle
Affiliate links — see our disclosure. Commissions never influence verdicts.
The most important thing about this bottle is what is no longer in it: Bayer removed glyphosate from residential Roundup, and this is one of the replacements.
A competent hardscape product carrying a brand name that now means something different. MSU Extension's write-up on the reformulation is worth reading before you buy on habit: the residential line replaced glyphosate with triclopyr, fluazifop and diquat, and those three do not behave like the old formula. Triclopyr hits broadleaves only, fluazifop hits grasses only, diquat gives the fast visible burn — together they are still non-selective in effect, so it stays off lawns. Two consequences people get caught by. MSU notes these products are NOT labeled for vegetable or other edible gardens, even as a burndown, which the glyphosate version was. And the extended-control versions in the same family add imazapic, which MSU warns can move through soil and be taken up by roots, so keep well clear of tree and shrub root zones. Three and a half stars is for a decent product sold under a name that invites a wrong assumption.
Our rating above is what it is. If the limits we describe rule this out for your lawn, these rate higher for the same job — read them before you decide.
Our rating: 4/5$36–$42
The cheapest way to buy plain glyphosate — and the fastest way to put a dead brown patch in a lawn if you spray it there.
Read the review →Our rating: 4.4/5$68–$82
41% glyphosate with the surfactant already in it, at acreage volume — the cheapest route to a systemic kill if you have the area to justify 2.5 gallons.
Read the review →Product type
Non-Selective Ready-to-Use Herbicide (wand sprayer)
Active ingredient
Triclopyr triethylamine salt 0.122% + Fluazifop-P-butyl 0.097% + Diquat dibromide 0.073% — no glyphosate
Price range
$22–$28
Coverage
1.33 gal ready-to-use; up to 10 minutes of continuous spray per pump cycle
Best for
Spot-killing weeds in driveways, patios and bed edges with no mixing
our editor rating
3.5 out of 5
Label read on EPA's label database
EPA Reg. No. 71995-65
We opened this product's accepted label on EPA's own Pesticide Product Label System — the strongest source available for what a product is registered to do.
EPA PPLS registry read 2026-08-03: registered as 'LG1920 ROUNDUP READY-TO-USE', EPA Reg. 71995-65, with 'ROUNDUP WEED & GRASS KILLER' and 'ROUNDUP POISON IVY PLUS TOUGH BRUSH KILLER' among its alternate brand names. THREE actives, no more: diquat dibromide 0.073%, fluazifop-P-butyl 0.097%, triclopyr triethylamine salt 0.122%. A web search asserted a fourth active, imazapic ammonium salt 0.015%; the EPA registry lists no imazapic and we do not record it. That mattered enough to check because imazapic has soil residual and this product is carded in how-long-after-roundup-can-i-plant-grass, where a residual active would change the seeding answer. It does not: there is no glyphosate here and no soil-residual active either.
Where this page and the container disagree, the container wins — the label is the legal authority on rates and restrictions. How to read one yourself.
Matched against each state's actual disease, weed and pest pressure.
Common questions
Roundup Weed & Grass Killer₄ with Pump 'N Go 2 Sprayer (1.33 gal) typically runs $22–$28, covering 1.33 gal ready-to-use; up to 10 minutes of continuous spray per pump cycle.
Roundup Weed & Grass Killer₄ with Pump 'N Go 2 Sprayer (1.33 gal) targets Dandelion, Clover, Crabgrass.
Triclopyr triethylamine salt 0.122% + Fluazifop-P-butyl 0.097% + Diquat dibromide 0.073% — no glyphosate, registered under EPA Reg. No. 71995-65.
Non-selective in effect — fluazifop is specifically there to kill grasses, so it will kill turf
The label for Roundup Weed & Grass Killer₄ Pump 'N Go lists Dandelion, but our rating is 3.5/5 — so read the verdict above before buying. A label listing a use and a product delivering it are not the same claim, and the gap is what our rating is measuring.
The accepted label is linked from this page, and the product is EPA Reg. No. 71995-65 — the number to search if the link ever moves. The label is the legal document; anything on this page that disagrees with it is wrong.
Real feedback
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Product Reviews
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Weed Control
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