Roundup Pro Weed Killer Review

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Review of the Roundup Pro Weed Killer

As of this writing, there are 183 customer comments and 70 answered questions for the Roundup Pro Weed Killer.  I’ve read the customer feedback and then condensed the results into this review.  I hope that this review helps you when shopping for weed killer.

Best Features

  • check Covers up to 435,600 square feet
  • check Great for industrial, turf, and ornamental weed control
  • check Effectively kills weeds
  • check Comes in a 2.5-gallon container
  • check Good price for what you get

Item Specifics

The Roundup Pro Weed Killer is for sale to small-scale businesses and is a non-selective post-emergent herbicide that kills the roots of weeds.  It is for industrial, turf, and ornamental weed control.  The 2.5-gallon container can cover up to 435,600 square feet for large jobs.  It is easiest to apply this weed killer with a tank sprayer (not included).  Keep in mind that this product will also kill your grass and any other plants around it, so be careful when applying this on weeds next to flowers, grass, or trees.  

Will Expire If Not Used in Time

This product does have a set shelf life.  The strength of the formula will not last indefinitely.  A customer shared this, “Roundup Pro is still the king. I have to maintain almost 3 acres of Florida lawn and landscaping–and weeds grow quickly here especially during the summer. Roundup has always been easy to use and this formula dries within three hours, very important when dodging our summer rainfalls. I’ve also found it useful to kill Brazilian Pepper trees and shrubs. Simply cut the stump about one foot from the ground and use a paintbrush to apply undiluted Roundup onto the stump.  This price is great but it comes with a caution. Check the expiration date to make sure that it doesn’t expire before you use it. The last one I bought expired in sixty days.”

Multiple Lawsuits Filed Against Maker of This Product

There have been well-publicized lawsuits filed against Monsanto, the maker of this product.  Much of it is over the health hazards present and what it does to the environment as a result of the killing of bees.  Some of the claims are that is causes cancer, ADHD, Alzheimer’s disease, Birth, Celiac disease and gluten intolerance defects, Autism, Chronic kidney disease, Colitis, Depression, Diabetes, Heart Disease, Hypothyroidism, Inflammatory Bowl Disease (“Leaky Gut Syndrome”), Liver disease, Lou Gehrig’s Disease (ALS), Multiple Sclerosis (MS), Non-Hodgkin lymphoma, Parkinson’s Disease, Pregnancy problems (infertility, miscarriages, stillbirths), Obesity, Reproductive problems, and Respiratory illnesses.

Very Effective at Killing Plants

The Roundup Pro Weed Killer will work at killing any vegetation that it is sprayed on.  Some people who know about the dangers of this particular product still chose to use it because it is effective.  A customer had this to share, “I hate Monsanto and try to avoid their products whenever I can, but when it comes to killing grass that persists in growing in the wrong places, nothing kills it like Roundup. When I saw the price, I thought it was a good deal for a gallon of concentrate. You can imagine my surprise when I noticed it was two and a half gallons! I now have strips of dead grass along my fence line and sidewalk, which will be a lot easier to remove than before.”

Good Price

The price on Amazon is better than when you buy this product at most retail mortar and brick stores.  Here is one of the many positive price comments, “I’ve been using the Roundup from Walmart and the box stores, but obviously they don’t give it away. It’s a no-brainer, those 32 oz bottles run about $48.00 with tax. This Super Roundup is 10 times that amount. Do the math. Great results. Just follow the directions. The amount of water they say to add gives the mixture in a % of the chemical. I used 12 oz per two gallons of water and the solution kicked the toughest weeds. Kudo’s to Super Roundup!”

Dangerous and Controversial Product

This herbicide has perhaps been the subject of more protest marches across America than any other poison on the market.  Here a customer articulates what many others are also saying, “Want cancer? BIRTH DEFECTS? A host of other problems? Buy it up! f you want to keep pests and weeds away, there are far cheaper, healthier and smarter options… The proof is in the science. Don’t let this criminal enterprise fool you with their glossy logo. They are killing off the bees, they are poisoning out the planet, and they are engineering ALL food so as to take control of the entire food supply. They are criminals and should be brought to justice for their crimes against humanity. Don’t buy this garbage! Wake up!”

Will Kill Bees

This product will also kill honey bees and flying insects.  Bees are very important to the environment.  One service that bees do for mankind and the environment is to pollinate our crops.  The maker of this product, Monsanto has received much negative feedback from people around the world.  Here is one of the customer comments, “This product is killing our environment and destroying our ecosystem. MONSANTO is an evil corporation. Do a little research please.”

Seems to Work Better in the Heat

Some people noticed better results with the weed killer when they used it in the heat versus cooler weather.  A customer shared this, “I first reviewed this product VERY negatively.  I bought it in late autumn and it did not work very well then.  If this is used in warmer weather, it works just fine.  My apologies to the seller and Amazon for my original, negative review.”

Takes a Long Time to Work

A common complaint about this product was that it does take some time to work. A customer shared this, “Great product!…..Super price!……The only negative is that it takes so…long to take a noticeable effect, a couple of weeks at least. I guess I, like so many others, have fallen victim to this age of “instant gratification”! Put it this way, the product definitely tests your patience!”

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  • plus Kills weeds effectively
  • plus Good price 
  • plus Covers up to 435,600 square feet


  • close Kills honeybees and other beneficial flying insects 
  • close Can cause cancer and a long list of other health problems
  • close Will kill grass and other plants in addition to weeds intended to be killed

Roundup Pro Weed Killer Conclusion

The Roundup Pro Weed Killer is designed to attack and kill plants by first killing the roots.  The 2.5-gallon container can cover up to 435,600 square feet.  It is easiest to apply this weed killer with a tank sprayer which is not included.  This product will also kill your grass and any other plants around it.  This product will also kill honey bees and other valuable flying insects.  Without bees, plants including our crops will not get pollinated.  Because of this and the health hazards that it poses for humans, marches and protests have happened across America.  The maker of this product, Monsanto and Roundup have been in the news for much some time. Some knowing the dangers still choose to use it because it is an effective weed killer.  

Common Questions

Here are some top questions that I found for people considering buying the Roundup Pro Weed Killer.

  • chevron-circle-right Is this weed killer liquid or pellets?  This is a 50.2% active ingredient (glyphosate) liquid herbicide that you mix with water to make a solution and spray on your target weeds.
  • chevron-circle-right How long after application is it safe to walk on?  It is safe to walk on as soon as it is dry.  However, if you have pets it is important to watch that they do not ingest it, even if it becomes dry.  But it is completely safe to walk on once it is dry.
  • chevron-circle-right Does Roundup Pro kill both grass and weeds?  Yes, the Roundup Pro Weed Killer will kill grass in addition to the weeds.  Because of this, you won’t want to put this weed killer on your lawn if you have weeds in your yard.  Also be careful if you put this weed killer near flowers or trees, as many customers reported that it kills those plants.  This product is best used in places where you don’t mind it killing all plants.  

Related Article: Best Weed Killer: Top 10 to Get Your Lawn Looking Great

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