(Beyond Pesticides, May 23, 2022)  The climate change-induced increase in wildfire frequency and intensity has lent new urgency to efforts to manage so-called “invasive” plants. Unfortunately, the herbicide-based approach favored by many is both counterproductive and hazardous. It must be replaced by an organic system, incorporating biological control agents like goats and establishing a more resilient ecology.    Tell your county/city officials to replace herbicides with organic vegetation management. Tell EPA and Congress that herbicides must be evaluated in the context of the availability of organic systems. Use of the herbicide indaziflam is an example of the ineffectiveness of management based on herbicides. While indaziflam is considered a “selective” herbicide, it actually kills and prevents germination of a wide range of broad-leaved plants and grasses and comes close to being a soil sterilant. The action on seedlings is long-lasting, thus inhibiting the growth and establishment of a resilient plant community that is resistant to invasion. Given its persistence and nonselective action and the extent of the damage it causes to native soil seed banks and plant biodiversity, indaziflam could contribute to the eventual ecological collapse of ecosystems where it’s applied, similar to the cascading impacts of the systemic insecticides, fipronil and […]

(Beyond Pesticides, May 19, 2022) A study published in the Journal of the American Heart Association finds a correlation between the number of fires fought annually and atrial fibrillation (AF), one of the most common medical arrhythmias that increases the risk of stroke, heart failure, and other cardiovascular health issues. In the firefighting occupation, firefighters can experience exposure to chemicals and particulate matter in smoke, pollutants, volatile organic compounds, and polycyclic aromatic hydrocarbons (PAHs) that increase cardiovascular (heart) and respiratory distress risk through oxidative stress and autonomic function disruption. However, firefighters encounter both personal and occupational (work-related) risk factors for cardiovascular diseases, making this subset of the population particularly vulnerable to heart-related fatalities. Considering firefighters live 10 to 15 years less than non-firefighters, studies like these are significant for understanding how chemical exposure contributes to health and wellness disparities. Lead author Paari Dominic, Ph.D., notes, “Clinicians who care for firefighters need to be aware of the increased cardiovascular risk, especially the increased risk of [AF], among this unique group of individuals… The conditions that elevate their risk further, such as high blood pressure, type 2 diabetes, lung disease and sleep apnea, should be treated aggressively. In addition, any symptoms of [AF], such as […]

(Beyond Pesticides, May 18, 2022) Bat population declines are costing American farmers as much as $495 million each year, finds research published this month in the Journal of the Association of Environmental and Resource Economists. Since 2006, a devastating fungal pathogen known as  Pseudogymnoascus destructans has torn through U.S. bat populations, causing a disease known as White Nose Syndrome that has killed over 90% of northern long eared, little brown, and tricolored bats. As researchers try to get a handle on the devastating and rapidly spreading disease, the effects are becoming apparent in agriculture as farmers lose their critical ecosystem services. “Lost bat populations have harmful ripple effects on food and agriculture,” says study coauthor Amy Ando, PhD. “Crop yields fall and input costs rise as farmers try to compensate for the services bats usually provide. That drives down the value of farmland and the number of acres planted, and the supply shock probably also hurts consumers as ag production becomes more costly.” White nose syndrome and its fungal pathogen were first discovered in a cave in New York in the mid-2000s, having likely traveled from Europe on the gear of a hiker or spelunker. The syndrome is characterized by […]

(Beyond Pesticides, May 12, 2022) A report published in Environmental Health finds that exposure to environmentally relevant concentrations of pesticides can alter gut microbial communities, as demonstrated through fecal samples. Over 300 environmental contaminants and their byproducts, including pesticides, are chemicals commonly present in human blood and urine samples. Ample evidence demonstrates that environmental contaminants, including pesticides, negatively affect the human mouth and gut microbes. However, fecal samples provide an accurate representation of the microbial community existing in the gut. These toxicants can alter hormone metabolism, which adversely affects health outcomes. Adverse health effects of environmental contaminants include reproductive and developmental defects, diabetes, cardiovascular disease, liver disease, obesity, thyroid disorders, and improper immune operation. Although studies show how chemical exposures affect human health, more research is now questioning how these toxic chemicals influence gut health. Therefore, studies like these highlight the importance of evaluating how chemical contaminants deregulate normal bodily function through microbiome changes. The report notes, “Our results highlight the need for future dietary intervention studies to understand effects of pesticide exposure on the gut microbiome and possible health consequences.” Researchers examined dietary exposure to 186 common pesticide residues in the fecal excrement to determine impacts on the microbiome among 65 twins in the United Kingdom. […]

(Beyond Pesticides, May 10, 2022) Widespread weed resistance on chemical corn and soybean farms is leading farmers to till their fields more often, significantly increasing greenhouse gas (GHG) emissions. These findings were published late last month in the journal Nature Food by a team of Iowa State University researchers. With agricultural practices accounting for roughly 10% of U.S. GHG emissions, and 25% of worldwide releases, farming practices that preserve soil health and sequester GHGs are essential for the future of food production. Tillage is a farming practice that can provide a range of benefits for crop production, but only in the right conditions. A range of tillage practices exist, ranging from yearly conventional tillage, where most crop residue is plowed into the soil, to conservation tillage where some residue remains, and no-till systems where the soil remains covered. Repeated tillage causes significant harm to soil structure and biology, and result in erosion and the release of GHGs like carbon dioxide, methane, and nitrous oxide from soil into the atmosphere. The harms of tillage have led both chemical and organic farmers toward no-till or reduced tillage systems. Organic no-till farming, as practiced by farming groups like the Rodale Institute, employs the […]

(Beyond Pesticides, May 9, 2022) While the U.S. Environmental Protection Agency (EPA) updated its guidelines for pollinator risk assessments in 2014, the agency continues to either fail to conduct full assessments, or dismiss concerning data it receives. EPA appears to discount threats like the insect apocalypse, evidenced by a 75% decline in insect abundance, which threatens not only global ecosystems, but also food production that depends on animal pollination. As pesticides move through the food web, birds are also at risk. Bird numbers are down 29% since Rachel Carson wrote Silent Spring in 1962. Tell EPA To Protect Against Other Threats to Pollinators. Tell Congress To Insist that EPA Does Its Job. The problem is highlighted by EPA’s recent Interim Decision on fenbuconazole, in which the agency notes that, “For larval bees, RQs (risk quotients) exceed the LOC (level of concern) for all pollinator attractive uses including when assessed at the lowest application rate of 0.0938 lb a.i./Acre (RQ = 1.1).” Yet in the same document, the agency declares that “…the benefits of fenbuconazole (e.g., efficacy in management of fungal pathogens) outweigh any remaining risk and that continuing to register fenbuconazole provides significant benefits, including its ability to increase crop […]

(Beyond Pesticides, May 6, 2022) A December 2021 report commissioned by the trade group Salmon Scotland concludes that the use of pesticide products by the nation’s salmon farms represents potential risk to “wild” swimmers (those who swim in open ocean waters). The report’s primary finding is that the use of insecticide products containing azamethiphos (an organophosphate), deltamethrin, and hydrogen peroxide to control sea lice in farmed fish contaminates sea water and, thus, threatens swimmers in the areas around the farms. Beyond Pesticides has reported on pesticide use in aquaculture, and most recently, on developing resistance — in the parasitic lice (Lepeophtheirus salmonis) that endanger both wild and farmed fish populations in the North Atlantic — to some of the chemical treatments used by aquaculturists to combat the parasite. The intense exploitation of wild fish and other marine creatures for human food (and as an ingredient in animal feeds) has caused, in recent decades, depletion of fish and seafood stocks across the world. The aquaculture industry — in which various aquatic species (fish, shellfish, and some plants) are bred, raised, and harvested in the open ocean — has grown rapidly as a response. Since the 1960s, the farming of salmon in the […]

(Beyond Pesticides, May 4, 2022) Agricultural intensification and climate change are driving unprecedented losses in insect abundance and biodiversity, placing key ecosystem functions like food production in peril. The findings of this research, published in Nature by scientists at University College London, UK, are the first to elucidate the interactions between major drivers of the ongoing insect apocalypse. As civilization moves deeper into a time in which the impacts of a rapidly warming planet meet the devastating effects of habitat loss and rampant chemical use, it becomes ever more critical that action be taken now to avert the worst outcomes for the future of life on the planet. While the solutions are in reach, tremendous public action is needed to stop the fossil fuel and agrichemical industries from their short-sighted pursuit of profit at any cost, climate advocates say. To conduct their analysis, scientists utilized both short-term studies and the Projecting Responses of Ecological Diversity in Changing Terrestrial Systems (PREDICTS) database, which contains insect biodiversity sampling comprising twenty years of information (1992 to 2012). Species richness and total abundance were reviewed for nearly 20,000 insect species, including dragonflies/damselflies, moths and butterflies, flies, true bugs, beetles, bees and wasps, and grasshoppers/crickets […]

(Beyond Pesticides, May 3, 2022) Exposure to a commonly used fungicide considered to be ‘slightly toxic or nontoxic’ to pollinators makes male mason bees less likely to find a mate, jeopardizing future generations of critically important pollinators. This determination comes from research recently published in the Journal of Applied Ecology by scientists at Germany’s University of Würzburg. The timing of these findings comes after the U.S. Environmental Protection Agency (EPA) reapproved uses of fenbuconazole, the fungicide in question, late last year without completing all required studies on pollinator health effects. Horned mason bees (Osmia cornuta), a solitary bee species, have a complex mating process that includes a range of “pre-copulatory behaviors” used by male bees attract females. Males create thoracic vibrations with their flight muscles, rub the eyes of female bees with their antennae, and emit a distinct odor from their body. If the female likes the presentation, she will mate with the male. Otherwise, she will move him to the side and wait for another male to try to win her affection. To see how this process was influenced by pesticide exposure, researchers conducted a range of different experiments. For the first, newly emerged male and female bees were […]

(Beyond Pesticides, April 28, 2022) A study in Environmental Research finds that glyphosate’s primary metabolite (breakdown product), aminomethylphosphonic acid (AMPA), induces DNA damage through oxidative stress among subpopulations of primary school children. Although pyrethroid and chlorpyrifos metabolites can induce oxidative stress, this study is the first to investigate AMPA’s association with adverse health effects, rather than solely the effects of the active ingredient, glyphosate, in Roundup and other formulations. Glyphosate is the most commonly used active ingredient worldwide, appearing in many herbicide formulations, readily contaminating soil, water, food, and other resources. Chemical use has been increasing since the inception of crops genetically modified to tolerate glyphosate. However, studies demonstrate glyphosate is among the most prevalent pesticide contributors to human, biotic, and ecosystem harm. According to research, herbicide toxicity to invertebrates has doubled since 2004. Although research links glyphosate exposure to cancer, specifically non-Hodgkin lymphoma, much less research considers the effects that metabolites have on children who are more vulnerable to chemical exposure. Ecological and health risk assessments primarily focus on active ingredients in pesticide products, overlooking the potential impacts of metabolites. Thus, studies like these highlight the need to assess the implications of metabolite exposure to protect human, animal, and environmental health. The study notes, “Our […]

(Beyond Pesticides, April 21, 2022) A literature review published in Royal Society finds that ‘inert’ ingredients’ in pesticide formulations adversely affect the health of bees and other wild pollinators. Inert ingredients, also known as “other” ingredients, and not disclosed by name on pesticide product labels, facilitate the action of active ingredients targeting a specific pest. Although both ingredients have chemical and biological activity, most studies on agricultural chemical toxicity focus on the active ingredient, assuming that inert ingredients are “nontoxic.” The U.S. Environmental Protection Agency (EPA), in regulating pesticides, assesses the toxicity of individual active ingredients on bees through various testing methods. However, there are no requirements for EPA to test inert ingredients to the same degree, despite evidence demonstrating these chemicals harm pollinators. Moreover, EPA does not require pesticide manufacturers to disclose the inert ingredients used in any product as the information is confidential. Both wild and commercial bees and other pollinators encounter multiple stressors, including pesticides, parasites, and poor nutrition, that act together to increase the risk of bee mortality. Therefore, reviews like these highlight the need for pesticide testing to consider the effects of all product ingredients, regardless of perceived toxicity. The researchers caution, “We argue that ‘inert’ ingredients […]

(Beyond Pesticides, April 20, 2022) A University of Michigan study is the first to highlight that maternal pesticide exposure during pregnancy adversely affects sleeping patterns for offspring later in life, specifically for females. Prenatal development is one of the most vulnerable periods of exposure as the fetus is most susceptible to the harmful effects of chemical contaminants. Many studies indicate that prenatal and early-life exposure to environmental toxicants increases susceptibility to diseases, from learning and developmental disabilities to cancer. However, the toxicity of pesticide exposure ad its full impact on the nonagricultural population in the U.S., especially women. Given research links to sleep-related disorders and neurological and cognitive development, studies like this can help government and health officials identify how pesticides’ impact on the brain elevates health concerns. The authors note, “Overall, these results are of public health importance considering the continued widespread agricultural and possibly residential use of pyrethroids and chlorpyrifos [in Mexico]…Thus, our results underline the importance of additional research studies that include both larger samples and assessment of unregulated pesticides, as well as studies that consider the underlying mechanisms explaining sex differences.” Levels of inadequate sleep patterns are rising among children and adolescents. Reports find variability in sleep duration results in higher rates of depression, anxiety, and […]

(Beyond Pesticides, April 19, 2022) Both houses of Maine’s legislature have just approved a bill that would, by 2030, ban pesticides that contain PFAS chemicals — the so-called “forever chemicals.” The bill’s next stop is the Appropriations Committee, for approval of $200,000 in annual funding to enact the bill; if successful there, it will move to the desk of Maine Governor Janet Mills for her signature. The legislation is one of a suite of lawmaker efforts in the state to address the growing PFAS problem with which localities across the U.S. are struggling. In this Daily News Blog article, Beyond Pesticides continues its coverage of the scourge of PFAS chemicals, particularly as it relates to pesticide use and the use of fertilizers made from PFAS-contaminated “biosludge” from municipal treatment facilities. PFAS — “per- and poly-fluoroalkyl substances” — are any of a family of more than 9,000 synthetic chemicals, invented in, and widely deployed since, the 1950s in a multitude of industrial and consumer products. PFAS molecules are made up of a chain of linked carbon and fluorine atoms; the carbon–fluorine bond is one of the strongest chemical bonds that exists, which means that these compounds do not break down in the […]

(Beyond Pesticides, April 18, 2022) Industrial poultry operations—generally indoors and with crowded conditions—provide the perfect incubator for pandemic influenza. According to the United Nations Food and Agriculture Organization (FAO), “These involve the congregation of large numbers of genetically identical animals of the same age (young) and sex, with rapid turnover and ‘all-in, all-out’ systems.” The U.S. Department of Agriculture (USDA) is delaying the adoption of organic rules that would require meaningful outdoor access and prevent indoor crowding. Influenza pandemics have killed millions of people—between 20 and 40 million people died in the 1918 pandemic, one million in 1957, and one to three million in 1968. According to the World Health Organization (WHO), “Influenza type A viruses are of most significance to public health due to their potential to cause an influenza pandemic.” There are several subtypes of type A influenza, which originates in birds. According to the Centers for Disease Control (CDC), there were 700 human cases of the H5N1 subtype since 2003, and only 40% survived. Tell USDA to promulgate a strong Organic Livestock and Poultry Standard. Tell USDA to protect against flu pandemics by applying the same rules to all poultry. Because avian flu poses a risk to […]

The organic solutions to problems highlighted in the latest issue of Pesticides and You—based on the importance of healthy ecosystems and public health protection—are within reach, and the data creates an imperative for action now that phases out pesticides within a decade, while ensuring food productivity, resilient land management, and safe food, air, and water. (Beyond Pesticides, April 15, 2022) The current issue of Pesticides and You, RETROSPECTIVE 2021: A Call to Urgent Action, is a look at a year of science, policy, and advocacy that informs both the existential problems that the U.S. and the world are facing due to toxic pesticide dependency, and solutions that can be adopted now. The information in this issue captures the body of science that empowers action at the local, state, and federal level, and provides a framework for challenging toxic pesticide use and putting alternatives in place. The issue finds that 2021 was a pivotal year in both defining the problem and advancing the solution. This year in review is divided into nine sections that provide an accounting of scientific findings documenting serious pesticide-induced health and environmental effects, disproportionate risk to people of color and those with preexisting conditions, regulatory failures, at the same time […]

(Beyond Pesticides, April 12, 2022) A recent study published in Scientific Reports warns that parasitic salmon lice (Lepeophtheirus salmonis) in Pacific Ocean open-net fish farming operations are becoming resistant to emamectin benzoate (EMB), an active ingredient used to control salmon lice population in North America, both in the U.S. and British Columbia, Canada. Previously, researchers believed parasitic salmon lice only had high rates of chemical resistance in the Atlantic region due to the mixing of farmed and wild salmon. However, Pacific salmon lice are exhibiting similar rates of decreased sensitivity to EMB from various sources, including a decrease in the wild Pacific salmon population, overuse of chemical treatments, and reliance on single chemical treatments. The aquaculture industry (e.g., farmed seafood/fish) repeatedly faces sustainability issues, failing to adhere to environmental regulations and threatening marine health. Extensive use of pesticides to rid the parasite has led to widespread resistance to multiple pesticides, prompting increasing infection rates among North Atlantic salmon populations. These parasites endanger both farmed salmon and wild salmon, in addition to other local species of fish. In this context, pesticide treatments contributes to resistance among lethal pest populations, especially in ecologically vulnerable and interconnected ecosystems like ocean basins. The researchers caution, “Salmon […]

(Beyond Pesticides, April 11, 2022) As the U.S. encourages the spread of chemical-intensive, industrialized agriculture, local farmers are increasingly pressured into giving up traditional agricultural practices in favor of monocultures to increase the demand  for agrichemical pesticides and fertilizers worldwide. This policy is promoted by the industry with vested economic interests as good for the U.S. economy, but it is not good for either planetary health or global food security. Instead, U.S. foreign aid agencies, through the U.S. Agency for International Development (USAID) and other agencies, should be supporting traditional practices and organic agriculture. Tell Congress and U.S. AID to support aid that promotes traditional and organic agriculture.  Industrial agriculture depends on monoculture—growing single crops that can be easily planted, fertilized, treated with pesticides, and harvested—especially on large-scale, mechanized farms. In spite of the perceived advantages of monoculture, however, it is a significant contributor to biodiversity loss and pollinator decline. Loss of biodiversity feeds the pesticide treadmill by removing predators and parasites who keep crop-feeding insects below damaging levels. The vast majority of crop plants depend on pollinators. Traditional agriculture, like organic agriculture, depends on interacting species. Most organic agriculture resembles monoculture piecewise, but integrates cover crops, hedgerows and other […]

(Beyond Pesticides, April 8, 2022) “The jury has reached a verdict. And it is damning. This report of the Intergovernmental Panel on Climate Change is a litany of broken climate promises. It is a file of shame, cataloguing the empty pledges that put us firmly on track towards an unlivable world. We are on a fast track to climate disaster.” These words came from United Nations Secretary-General António Guterres in a statement responding to the latest IPCC (Intergovernmental Panel on Climate Change) report released on April 4. As a Beyond Pesticides Daily News Blog headline virtually shouted in October 2021, “Climate Crisis, Soil, Pesticides, Fertilizers: Red alert! This is Not a Drill!” This IPCC report — Climate Change 2022: Mitigation of Climate Change — is the third and final part of the panel’s latest review of climate science. It is informed by the work of thousands of scientists, and follows on the first two of the trio of reports that comprise the comprehensive Sixth Assessment Report. The first, Climate Change 2021: The Physical Science Basis, from the IPCC Working Group I, was released on August 9, 2021. The second, Climate Change 2022: Impacts, Adaptation, and Vulnerability, from Working Group II, […]

(Beyond Pesticides, April 7, 2022) Legislation introduced by U.S. Representative Rodney Davis (R-IL) last week would roll back, preempt, and prohibit local jurisdictions from enacting policies that protect resident health and a community’s unique local environments from hazardous pesticides. The bill, H.R.7266, is a direct attack on the scores of local communities that have enacted common sense safeguards from toxic pesticides, and represents the pesticide industry’s response to the growing momentum of the pesticide reform movement. Health and environmental advocates are expecting Rep. Davis and his partners in the agrichemical industry to attempt to work the provisions of the legislation into the upcoming 2023 farm bill. The industry had previously attempted to work federal preemption into the 2018 farm bill, an effort that ultimately failed after massive pushback from health advocates, local officials, and Congressional allies. Rep. Davis’ press release for the bill, in which he was joined with quotes from a range of agrichemical industry leaders, is titled “Davis Introduces Legislation to Prevent Liberal Local Governments from Banning or Restricting Pesticide Use,” striking a partisan tone. Caring about public and environmental health is typically not viewed as a liberal or conservative, Democratic or Republican issue. Those monitoring local governments […]

(Beyond Pesticides, April 6, 2022) Conventional apples sold at market and sprayed with synthetic fungicides may not only contain drug-resistant fungi, but function as a transmission reservoir and route to spread these dangerous pathogens, finds research published in mBio late last month by a team of researchers from India and Canada. As reports of fungal resistance rise, particularly in hospitals and among the immunocompromised, there is an urgent need to understand and address the root causes of these emerging disease threats. “When we look at human pathogens, we tend to look at what’s immediate to us,” said study coauthor Jianping Xu, PhD. “But we have to look at it more broadly. Everything is connected, the whole system. Fruit is just 1 example.”   Researchers set out their research with the suspicion that stored fruits sprayed with synthetic fungicides were acting as a source and route of transmission for the deadly fungi Candida auris. This yeast is considered an “emerging fungal pathogen” by the U.S. Centers for Disease Control and Prevention (CDC), and has increased its rate of infection significantly since its initial identification in the mid 1990s. The fungi has been found in every continent save Antarctica. It has proven to […]

(Beyond Pesticides, April 5, 2022) A meta-analysis by the Federal University of Technology – Paraná finds the herbicide 2,4-D causes indiscriminate harm, increasing the mortality rate among exposed animals. The severity of chemical exposure relies on species sensitivity, exposure rate, and lifecycle stage. However, commercial formulations of 2,4-D, commonly used in the environment, prompt a higher species mortality rate than technical (pure) 2,4-D alone. Like many other common herbicides such as glyphosate, 2,4-D has global uses that allow the chemical to accumulate in the environment, including soils, waterways, and tissues of non-target species. Therefore, meta-analyses like this help local and government officials make holistic decisions regarding environmental contaminants that incorporate conclusions from various studies. Using the Web of Science and Scopus databases, researchers compiled various studies (or meta-analyses) on the lethality of 2,4-D in different animal species (e.g., vertebrates, invertebrates). Researchers evaluated each study regarding the mortality rate of control and experimental groups, animal sensitivity to chemical exposure during a specific life stage, chemical formulation (e.g., commercial or technical), and exposure routes causing mortality. The analysis demonstrates that vertebrates experience higher mortality rates from 2,4-D exposure, with fish and birds presenting the highest mortality rate. Regarding life stages, larval and adult […]

(Beyond Pesticides, April 4, 2022) Recent actions by the U.S. Environmental Protection Agency (EPA) highlight the urgent need to prevent pesticides from further endangering crucial pollinators, including birds, bees, and bats. Tell EPA To Ban Neonics and Protect Against Other Threats to Pollinators. Tell Congress To Insist that EPA Does Its Job. Despite EPA’s own findings of evidence of serious threats posed by neonicotinoid (neonic) pesticides to pollinators, aquatic invertebrates, and other wildlife, it issued interim decisions on these neonics in January 2020 that disregard the science on the pesticides’ impacts and it appears that the agency is prepared to finalize these registrations late in 2022. This would, barring further action, extend the use of these harmful compounds for 15 years. Now is the time to let EPA know that continued use of neonicotinoids is unacceptable. Furthermore, building on a history of unenforceable and impractical pesticide label restrictions resulting in EPA findings of ludicrously small or no risk, the agency spun its approval of the continued use of the deadly organophosphate insecticide malathion as “protecting threatened and endangered species.” As the nation and world sit on the brink of biodiversity collapse and deadly pesticide-induced diseases, EPA actions continue to protect pesticide […]

(Beyond Pesticides, April 1, 2022) According to reporting by E&E’s Greenwire, internal emails at the U.S. Environmental Protection Agency (EPA) show that career scientists at the agency expressed worry about pesticide-laced pet collars, such as the notorious Seresto flea and tick collars, but that EPA managers “instructed them to avoid documenting those worries in publicly accessible records.” The emails were released pursuant to a 2021 FOIA (Freedom of Information Act) lawsuit, brought by the Center for Biological Diversity (CBD), that sought records of internal communications. The documents evidence staff concern about the collars that has not been a part of EPA’s public communications on the subject. EPA staff, in the emails, expressed a range of degrees of outrage at managers’ behavior and at the very registration of the product, given the significant harms. Seresto collars are plastic pet collars embedded with pesticides designed to kill fleas, ticks, and lice; they contain the active ingredients flumethrin and imidacloprid. Flumethrin, a chemical in the pyrethroid class of synthetic neurotoxic insecticides, has been linked repeatedly to neurological issues, such as seizures and learning disabilities in children, to gastrointestinal distress, and to damage to nontarget invertebrates, according to EPA’s own analysis. Imidacloprid is a commonly used pesticide linked to […]