Ratings may include incentivized customer reviews.
What Customers Are Saying
Customers overwhelmingly praise the product for its powerful weed-killing performance and long-lasting prevention. Most report visible results within minutes or by the next day, with weeds completely eliminated from driveways, sidewalks, and yards. The dual action—killing existing weeds while preventing new growth for up to four months—is frequently highlighted as a major benefit. Reviewers commend the spray nozzle for easy, efficient application and precise targeting between shrubs and cracks. A few users reported inconsistent results or odor concerns, but these represent a small fraction of feedback. Overall, customers express strong confidence in the product's reliability and recommend it highly.
Customer review summary generated by AI, including incentivized reviews.Does the job
[This review was collected as part of a promotion.] Works very well. Killed weeds and grass that were growing where we didn't want quickly. Didn't have a smell: was very convenient that it had a nozzle to help distribute the solution. Great price for a great product
From roundup.com
Good
[This review was collected as part of a promotion.] Great product . Even i have a huge dog and he runs everywhere it helps us to protect and be safety . Good packaging and super effective. Great value for money
From roundup.com
Weeds be gone!
[This review was collected as part of a promotion.] Roundup does the job. Weed and grass killer.we used it to clear a grass area where we wanted to make a paver path. It took more then one application to get rid of the grass and weeds. The wand is pretty long and the pump works great.
From roundup.com
Works Quickly and Efficiently
[This review was collected as part of a promotion.] My husband used this in our backyard to get rid of some weeds. He sprayed it Saturday and by Sunday the weeds were DEAD! Very impressed, will purchase again and recommend 👌 👏
From roundup.com
Spray
[This review was collected as part of a promotion.] This works alright. The sprayer it comes with is useless. We had to move it into a better spray container. I did get worried about my chickens getting into this but they did good
From roundup.com
Multiple applications needed
[This review was collected as part of a promotion.] I like that this packaging is a concentrate and is more eco friendly packaging. The product worked ok to clear out a stepping stone walking path but it did take multiple applications before most of the vegetation was killed.
From roundup.com
Excellent for large coverage areas!
[This review was collected as part of a promotion.] Tried this to kill all the weeds in our raised bed before planting. Saw results and wilting of all vegetation after the first day, photos are after 7 days. Going to till in the soil and plant, hopefully it will kill them for the rest of the season and I’ll be able to do the same next year.
From roundup.com
Effective
[This review was collected as part of a promotion.] I used it to put a mesh on top and stone to make a path. It is super effective. The price is reasonable and it does not have an unpleasant aroma. Super safety and the packaging it’s super simple.
From roundup.com
Great for killing weeds
[This review was collected as part of a promotion.] I sprayed some dandelions to see how effective this would be. Turns out this killed it so I will be getting all dandelions. The price is great. It didn’t notice an odor like some sprays can have.
From roundup.com
Great!
[This review was collected as part of a promotion.] I’ve been using Roundup Dual Action Weed & Grass Killer for a while now, and overall, I’m really pleased with the results. It works fast—within a few hours, I start seeing the weeds wilt, and within a couple of days, they’re completely gone. One of the biggest selling points for me is the 4-month prevention claim, and so far, it has done a solid job keeping most weeds from coming back in treated areas. I used it along the edges of my driveway,...
From roundup.com
Not as good as the past
Would Not RecommendNot very effective. Each year, these weed products (probably because of lawsuits) become less and less effective. This did kill a few things, but it did not work on half of what it used to eliminate.
From roundup.com
We're sorry to read about your disappointment with Roundup Dual Action Weed & Grass Killer Plus 4 Month Preventer and appreciate your feedback. When... Read More
Used sparingly in rocky terrain for weed control w
[This review was collected as part of a promotion.] Works like the other products we have purchased from round up before. I try really hard not to use chemicals throughout my land and more specifically far away from our well and the the slope of our property where water seeps down into the soil to head to the well and surround. With that being said, we will use chemicals if we must in certain areas, such as in the rock beds that line the front gates of our property to keep them decently clear of...
From roundup.com
Works great!
[This review was collected as part of a promotion.] I sprayed this on some weeds and within 2 days they were dead. Easy to use and one jug will cover large areas if needed . Now I will see if it’s able to prevent weed from growing for 4 months.
From roundup.com
so far so good!
[This review was collected as part of a promotion.] We sprayed our yard and so far, the weeds are dying! I’m hoping the prevention works as good. the fact that is sprays for a few minutes at a time without having to continuously pump is so nice.
From roundup.com
It works!!!
[This review was collected as part of a promotion.] The Roundup Dual Action Weed and Grass Killer actually was very effective in killing stubborn Japanese Knot Weed as seen in the video. I’ve tried many things to kill that but nothing worked until now. My only complaints are that the sprayer leaked onto my hand while spraying and having this sprayer not be battery powered so you don’t constantly have to squeeze the trigger was a bit of work. Overall very happy with this stuff and will be buying ...
From roundup.com
Great for killing weeds
[This review was collected as part of a promotion.] I’ve honestly never used round up weed killer myself, but now that I have my own house and this is the first time I’ve used it, this stuff works great! The pictures are two days after we sprayed the weeds but after 4 hours they were already dying. I would definitely continue buying this to kill all the weeds I have.
From roundup.com
Effective
[This review was collected as part of a promotion.] It is highly effective herbicide that quickly eliminates unwanted weeds and grasses. It’s easy to apply and shows visible results within a few days.
From roundup.com
Works well if follow directions
[This review was collected as part of a promotion.] Works well but make sure you follow directions. Great for thick lawns and start up new sod. Works well in concrete or paver seams in keeping weeds and unwanted grass at bay. Makes sense to block off areas of your lawn without weeds, so that Roundup does not harm healthy grass
From roundup.com
Kills stuff but not for long
Would Not RecommendKills weeds and grass but definitely does NOT keep it killed for 4 months. I've wasted so much money on round up, respraying affected areas, in the past few years. I have to respray every few weeks - I've even sprayed an "entire area" like it says you have to, and weeds still come back. Frustrating and wasteful of money and time.
From roundup.com
We're sorry to hear about your experience with Roundup Dual Action Weed & Grass Killer Plus 4 Month Preventer and appreciate you taking the time to sh... Read More
Fast & Effective Weed Killer
[This review was collected as part of a promotion.] Love this dual action weed & grass killer! The pump n go 2 sprayer makes it easy to use. Kills weeds and grass on contact and prevents new growth for 4 months. Highly effective and convenient!
From roundup.com

We're sorry to read about your disappointment with Roundup Dual Action Weed & Grass Killer Plus 4 Month Preventer and appreciate your feedback. The ... Read More