Glyphosate answers

A trusted friend of the gardener

For 150 years, we have earned consumer trust by providing products that help gardeners grow thriving gardens and landscapes. This includes offering products that control pests and diseases in order to protect plantings and landscape investments. We are committed to using high-quality solutions that can be used safely around homes, families and the environment.

Our approach to product stewardship

As consumers seek to control pests in and around their homes, we must work to ensure that our products can be used successfully and responsibly in a variety of settings. We understand that our consumers expect our products can be safely used as directed around people, pets, and the environment. This is why we continuously review what active ingredients we choose to use.

We consult many scientists, leading academic studies and government publications when evaluating active ingredients for our products. We also work with regulatory agencies at the national, state and local levels to understand what active ingredients are best to use in different locations.

We take great pride in the science behind our products. We also highly value consumer trust in our products and work every day to uphold that trust. That includes providing products that we believe can be used safely and effectively when used as directed.

About glyphosate

Glyphosate is the active ingredient in many Roundup® brand products. Glyphosate-based products have been extensively studied over more than 40 years. In fact, there have been hundreds of health and safety studies on glyphosate—many of which came from independent researchers. Glyphosate is one of the most relied-upon herbicides for weed control in the world and its uses span from agriculture to professional land management to consumer uses.

Many regulatory and health authorities from around the world have evaluated the uses of glyphosate-based products. In the United States, organizations including the U.S. Environmental Protection Agency and the National Institutes of Health have assessed the use of glyphosate as recently as December of 2017. You can find direct links to their findings here:

A Note on IARC

In 2015, IARC, the International Agency for Research on Cancer, issued a rating for glyphosate that gained a lot of media attention because IARC classified glyphosate as a “probable carcinogen.” Read the IARC report.

After the report was issued, IARC’s findings were challenged by other organizations as inconsistent with other multi-year or scientific assessments conducted by scientists from countries who are responsible for ensuring public safety. In total, more than 100 countries have approved glyphosate for use. A few of those publications can be found here:

According to the Campaign for Accuracy in Public Health Research, such regulatory and health authorities have conducted real world assessments, which means taking into account exposure “to determine the likelihood that any given hazard will actually pose a risk of harm.”


We welcome your feedback on our efforts. Contact us at

Email Alerts

Sign up for messages that are conveniently delivered to your inbox whenever certain new company information is available.

What Others Are Saying

"EPA continues to find that there are no risks to public health when glyphosate is used in accordance with its current label and that glyphosate is not a carcinogen."Quote

University of Washington
Exposure to glyphosate — the world’s most widely used, broad-spectrum herbicide and the primary ingredient in the weedkiller Roundup — increases the risk of some cancers… Quote

Bayer Official Statement on March 29 California Jury Verdict
"We are disappointed with the jury’s decision, but this verdict does not change the weight of over four decades of extensive science ..." Quote

Health Canada
An evaluation of available scientific information found that products containing glyphosate do not present risks of concern to human health or the environment when used according to the revised label directions.Quote

U.S. EPA: Concludes that glyphosate is not likely to be carcinogenic to humans.
The Agency’s assessment found no other meaningful risks to human health when the product is used according to the pesticide label. The Agency’s scientific findings are consistent with the conclusions of science reviews by a number of other countries as well as the 2017 National Institute of Health Agricultural Health Survey.Quote

National Institute of Heath
In conclusion, we found no evidence of an association between glyphosate use and risk of any solid tumors or lymphoid malignancies, including NHL and its subtypes.Quote

European Chemicals Agency (ECHA)
“...RAC concluded that the available scientific evidence did not meet the criteria to classify glyphosate as a carcinogen”Quote

European Food Safety Authority
“...EFSA concluded that glyphosate is unlikely to pose a carcinogenic hazard to humans...”Quote

Canadian Pest Management Regulatory Agency
“Health and Welfare Canada has reviewed the glyphosate toxicology database, which is considered to be complete. The acute toxicity of glyphosate is very low. The submitted studies contain no evidence that glyphosate causes mutations, birth defects or cancer.”Quote

U.S. Environmental Protection Agency
“Several chronic toxicity/carcinogenicity studies…resulted in no effects based on the parameters examined, or resulted in findings that glyphosate was not carcinogenic in the study” and “Glyphosate does not cause mutations.” Quote

U.S. Environmental Protection Agency
“EPA has concluded that glyphosate does not pose a cancer risk to humans.”Quote

German Federal Institute for Risk Assessment
“In epidemiological studies in humans, there was no evidence of carcinogenicity and there were no effects on fertility, reproduction and development of neurotoxicity that might be attributed to glyphosate.”Quote

Australian Pesticides and Veterinary Medicines Authority
“The APVMA currently has no data before it suggesting that glyphosate products registered in Australia and used according to label instructions present any unacceptable risks to human health, the environment and trade. ... The weight and strength of evidence shows that glyphosate is not genotoxic, carcinogenic or neurotoxic.” Quote

In the News

Reuters: Farmers in Germany will have to gradually reduce their use of glyphosate and stop using it completely from 2024.News AP: Mexico’s Agriculture Department has proposed rules for phasing out the use of glyphosate, the active ingredient in weed killer Roundup, by early 2024.News Reuters: France will give financial aid to farmers who agree to halt use of glyphosate, the farm ministry said on Monday after President Macron said he had failed with efforts to ban use of the weedkiller by 2021.News Reuters: France’s health and environment agency announced restrictions on weedkiller glyphosate in farming, but stopped short of a full ban.News AP: An Austrian ban on the weedkiller glyphosate, a substance that has long been disputed in Europe and beyond, can’t take effect on Jan.News AP: Thailand’s government agreed Tuesday to ban the use of three farming chemicals widely regarded as dangerous to human health.News NBC News: Popular Weed Killer's alleged link to cancer stirs widespread concern. Two juries have implicated Roundup as the cause of cancer in frequent users, but major public health agencies disagree over whether it is a carcinogen.News Science 2.0: Paper claims a link between glyphosate And cancer but fails To show evidence. Could exposure to glyphosate -- an herbicide often paired with genetically engineered corn, soybeans, cotton, and other crops – be causing cancer?News Forbes: Does the herbicide Roundup cause cancer? "For many years, environmental activists have been concerned about the herbicide glyphosate, which is the main ingredient in RoundUp®, the world's most widely-used weed killer."News AP: Man awarded $80M in lawsuit claiming Roundup causes cancer. "A U.S. jury on Wednesday awarded more than $80 million in damages to a California man who blamed Roundup weed killer for his cancer..."News CNN: California says key ingredient in Roundup weed killer can cause cancer. "Monsanto, the maker of Roundup, says that agency's conclusion is "fatally flawed"News Brazil health agency concludes safety evaluation of weedkiller glyphosate. Brazil’s health agency has concluded a re-evaluation of the safety of the weedkiller glyphosate, the most widely-used agriculture chemical in the country.News US judge blocks weed-killer warning label in California "...almost all regulators have concluded there is no evidence that the product’s main ingredient is a carcinogen." News U.S. judge halts California plan to require glyphosate warnings "U.S. District Judge William Shubb said the warnings would be misleading because glyphosate is not known to cause cancer" News U.S. EPA says glyphosate not likely to be carcinogenic to people "The EPA, in a draft risk assessment report issued on Monday, also said it found “no other meaningful risks to human health” when glyphosate, the world’s biggest-selling weed killer, is used according to its label instructions." News EPA says herbicide in Roundup weed killer doesn't cause cancer, contradicting California regulators "The federal Environmental Protection Agency on Monday said glyphosate, the primary ingredient in the weed killer Roundup and one of the most widely used herbicides in agriculture, likely does not cause cancer." News Reuters: The scientist leading that review knew of fresh data showing no cancer link - but he never mentioned it and the agency did not take it into account.News UN Report from the the Joint FAO/WHO Meeting on Pesticide Residues "Meeting concluded that glyphosate is unlikely to pose a carcinogenic risk to humans from exposure through the diet." News New Zealand experts have urged for calm after one of the most commonly used weed killers was reassessed as a probable human carcinogen. "News The Science Media Centre "The IARC process is not designed to take into account how a pesticide is used in the real world..."News Glyphosate Task Force "The evaluation by the IARC demonstrates serious deficiencies in terms of methodological approach and the overall conclusion is inconsistent with the results of all regulatory reviews concerning glyphosate’s safety profile."News Forbes "But one of the seminal tenets of toxicology is that “the dose makes the poison,” and the reality is that glyphosate is not a human health risk even at levels of exposure that are more than 100 times higher than the human exposures that occur under conditions consistent with the product’s labeling."News World Health Organization “In view of the absence of a carcinogenic potential in animals and the lack of genotoxicity in standard tests, the Meeting concluded that glyphosate is unlikely to pose a carcinogenic risk to humans.”News National Institute of Health “…analyses of the full dataset provides no convincing evidence in the [US Agricultural Health Study] for a link between multiple myeloma risk and glyphosate use.”News