(Beyond Pesticides, March 2, 2018) Neonicotinoids, the most widely used class of insecticides in the world, do pose risks to honey bees and wild pollinators, according to a comprehensive assessment released last week by the European Food Safety Authority (EFSA). Encompassing an analysis of over 1,500 studies from academia, beekeeper associations, chemical companies, farmer groups, non-governmental organizations, and national regulators, EFSA’s risk assessment provides a definitive, independent conclusion that overall, continued use of these chemicals risks the long-term health of pollinator populations. After delaying a vote that would ban all outdoor uses of neonicotinoids in December in anticipation of EFSA’s assessment, the European Commission will revisit the issue as soon as March 22. “The availability of such a substantial amount of data as well as the guidance has enabled us to produce very detailed conclusions,” said Jose Tarazona, PhD, head of EFSA’s Pesticides Unit in a press release. This is EFSA’s second comprehensive evaluation of the three most commonly used neonicotinoids: imidacloprid, clothianidin, and thiamethoxam. Earlier research finalized in 2013 led the European Union (EU) to ban use of the three neonicotinoids on agricultural flowering crops. The new assessment builds upon the initial review, and includes literature not only on […]

(Beyond Pesticides, March 5, 2018) Even if you don’t live in California, chances are that you eat food that is grown there. Unless all that food is organic, some of it was probably sprayed with chlorpyrifos, exposing not only you, but also the farmworkers responsible for its cultivation and harvest. Farmworker families –especially children—who usually live close to the treated fields, suffer higher impacts than those living further away. Tell Governor Brown to ban chlorpyrifos now, for the sake of the children. Five months after the California Department of Pesticide Regulation (DPR) issued its weak and inadequate draft risk assessment for the brain-harming pesticide chlorpyrifos, the state’s Scientific Review Panel (SRP) ordered DPR back to the drawing board to produce a much stronger draft that properly considers the risk of harm to the developing brain. In view of EPA’s retraction of its proposal to revoke food residue tolerances of the highly neurotoxic insecticide chlorpyrifos, despite its own assessment that the chemical is too toxic to children, it is especially important that California take action to ban the chemical. California, the home of the largest agriculture industry in the country, used over one million pounds of chlorpyrifos on over a million acres […]

(Beyond Pesticides, March 1, 2018)  A comprehensive review of notorious, bee-killing neonicotinoid insecticides finds that crop yields and on-farm profit can be maintained and improved by replacing these toxic chemicals with alternative pest management strategies. The new study is part of an ongoing update to the 2014 Worldwide Integrated Assessment undertaken by an international team of scientists called the Task Force on Systemic Pesticides. The results of this review point to the need for strong action against these chemicals by all levels of government. “Regulators need to realize that if we want sustainable agricultural practices, we need a more restrictive regulatory framework and programs to support farmers making the switch,” said Task Force co-chair and scientist at France’s National Scientific Research Centre Jean-Marc Bonmatin, PhD, in a press release. “Our findings on the availability of alternatives will be particularly relevant where new restrictions on neonics are being considered.” The Task Force reviewed 200 studies on systemic insecticides, looking at their use and pest resistance in annual and perennial crops, the viability of alternative pest management techniques, and the potential to implement alternative forms of crop insurance to cover risks, rather than spray expensive insecticides. For perennial crops, researchers focus on the […]

(Beyond Pesticides, February 26, 2017) U.S. Representatives Earl Blumenauer (D-OR) and Jim McGovern (D-MA) reintroduced the Saving America’s Pollinators Act (H.R. 5015), which suspends the registration of certain neonicotinoid insecticides until the U.S. Environmental Protection Agency conducts a full scientific review that ensures these chemicals do not harm pollinators. Last week, Beyond Pesticides joined Rep. Blumenauer and other experts from environmental, conservation, whistleblower, and farmworker health groups on Capitol Hill to urge Congress to take action to protect pollinators in the face of ongoing obstruction by an increasingly industry-influenced EPA. Tell your Representative to cosponsor the Save America’s Pollinators Act!“ Pollinators are the backbone of America’s agriculture system. Acting now to protect them and stop their decline is essential to the sustainability of our nation’s food supply,” Rep. McGovern said. “Simply taking the word of the manufacturers that their products are safe is not an option. Consumers need strong oversight. That is why I am proud to join Congressman Blumenauer in demanding the EPA fully investigate the effect that certain harmful pesticides may have on the vitality of our pollinators.” Numerous scientific studies implicate neonicotinoid pesticides as key contributors to the global decline of pollinator populations. EPA’s own scientists have found that […]

(Beyond Pesticides, February 23, 2018) Agrichemical corporation Monsanto has lost its bid to halt a statewide ban on the use of its specialty dicamba herbicide in Arkansas. Despite a lengthy process of evaluation and public comment that led to a prohibition on the use of drift-prone dicamba herbicides during the growing season on Arkansas farms, Monsanto made one last-ditch attempt to stop the law from going into effect by suing the entire state. With the industry’s loss, Arkansas is on track to implement the toughest restrictions against dicamba in the U.S. State Circuit Court Judge Chris Piazza dismissed the lawsuit last week based on a recent Arkansas Supreme Court ruling, which held that the state cannot be made a defendant in court. Monsanto’s lawsuit argued against the makeup of the state’s Plant Board, which voted to prohibit the company’s product last November. Monsanto also made claims that the state did not consider the economic damage a ban on the herbicide would cause, despite not seeking monetary restitution in court. Beyond Pesticides led a nationwide campaign to urge action by the Arkansas Plant Board to ban dicamba. Dicamba is an herbicide originally registered for use in 1967 to control broadleaf weeds. […]

(Beyond Pesticides, February 20, 2018) The U.S. Centers for Disease Control and Prevention (CDC) finds that the U.S. Environmental Protection Agency (EPA) label restrictions on total release foggers, otherwise known as “bug bombs,” are a public health failure. Bug bombs pose a significant risk of acute illness to individuals even when they attempt to follow new label instructions. Beyond Pesticides has long called for bug bombs to be banned, as there are a myriad of non-toxic alternative strategies to successfully manage household pests. Urge your Governor to ban bug bombs in your state! Bug bombs are small cans primarily comprised of an insecticide, often a synthetic pyrethroid, a synergist such as piperonyl butoxide (PBO), and an aerosol propellant. In addition to the explosion/fire risk if the aerosol product is used in an unattended home near a pilot light or other spark-producing appliance, both synthetic pyrethroids and PBO pose acute and chronic human health risks. PBO is added to pesticide formulations to increase the toxicity of synthetic pyrethroids, and has been linked to childhood cough. Peer-reviewed research associates synthetic pyrethroids with behavioral disorders, ADHD, and delayed cognitive and motor development, and premature puberty in boys. Not only can bug bombs acutely poison, […]

(Beyond Pesticides, February 16, 2018) U.S. Representatives Blumenauer (D-OR) and Jim McGovern (D-MA) this week announced plans to reintroduce the Saving America’s Pollinators Act, (previously H.R. 3040) which suspends the registration of certain neonicotinoid insecticides until the U.S. Environmental Protection Agency conducts a full scientific review that ensures these chemicals do not harm pollinators. Beyond Pesticides joined Rep. Blumenauer and other experts from environmental, conservation, whistleblower and farmworker health groups on Capitol Hill to urge Congress to take action to protect pollinators in the face of ongoing obstruction by an increasingly industry-influenced EPA. “Pollinators are the backbone of America’s agriculture system. Acting now to protect them and stop their decline is essential to the sustainability of our nation’s food supply,” Rep. McGovern said. “Simply taking the word of the manufacturers that their products are safe is not an option. Consumers need strong oversight. That is why I am proud to join Congressman Blumenauer in demanding the EPA fully investigate the effect that certain harmful pesticides may have on the vitality of our pollinators.” Numerous scientific studies implicate neonicotinoid pesticides as key contributors to the global decline of pollinator populations. EPA’s own scientists have found that neonicotinoids pose far-reaching risks to […]

(Beyond Pesticides, February 15, 2018) The U.S. Environmental Protection Agency (EPA) settled claims against pesticide giant, Syngenta, after dozens of workers in Kuai, Hawaii were exposed to the neurotoxic pesticide chlorpyrifos in 2016 and 2017. EPA backed away from the $4.8 million settlement that it was initially seeking from Syngenta and negotiated a civil penalty of $150,000. Nineteen workers were exposed to chlorpyrifos after Syngenta sprayed the insecticide on a field of genetically engineered (GE) corn at its Kekaha farm. According to the complaint, the workers were allowed to reenter the field before the reentry period expired and without protective equipment. Ten workers were taken to the hospital and three were held overnight. This incident occurred in 2016, however a second incident occurred in 2017 when Syngenta failed to post warnings for worker crews containing 42 employees after applying chlorpyrifos. At the time of the incident, an inspector from the Hawaii Department of Agriculture (HDOA) was present on the Syngenta farm, which triggered an immediate investigation from the state. Consequently, a civil administrative enforcement action was brought against Syngenta seeking $4.8 million for violating multiple federal statues including worker protection standards, allegedly affecting as many as 77 workers and leading […]

(Beyond Pesticides, February 14, 2018) Total release foggers, otherwise known as bug bombs, received updated labels from the U.S. Environmental Protection Agency (EPA) in 2011 as part of efforts to reduce accidental poisonings, but a new report from the U.S. Centers for Disease Control and Prevention (CDC) finds that EPA restrictions are a public health failure. Bug bombs pose a significant risk of acute illness to individuals even when attempting to follow new label instructions. Beyond Pesticides has long called for bug bombs to be banned, as there are a myriad of non-toxic alternative strategies to successfully manage household pests. CDC’s report, Acute Illnesses and Injuries Related to Total Release Foggers, updates a previous study released in 2008 which found significant safety concerns about bug bombs and ultimately prompted EPA to revise the labels of these products. At the time, CDC found a total of 466 illnesses or injuries associated with the use of total release foggers between 2001-2006. Incidents ranged from failing to leave an area after releasing the bug bomb, reentering the premises too early, use of too many products for the space provided, and even explosions related to the ignition of aerosols released from the product. Bug […]

(Beyond Pesticides, February 12, 2018)  The most recent findings on the development of Parkinson’s disease after exposure to the highly toxic paraquat add to the well-established body of scientific literature linking the herbicide to Parkinson’s — which should lead to finally eliminating the use of the herbicide in the U.S. The chemical was banned in the European Union in 2007, and many health groups, including Beyond Pesticides and The Michael J. Fox Foundation for Parkinson’s Research, are calling on the U.S. Environmental Protection Agency (EPA) to stop the use of paraquat by denying its upcoming reregistration. In addition to its connection with Parkinson’s disease, paraquat is known to be highly acutely toxic. By generating free radicals, it essentially burns its way through the body, targeting the lungs —causing lung fibrosis— and other organs. Most acutely toxic exposures result in death, sometimes delayed by as much as three weeks. Although paraquat is a restricted use pesticide (RUP), EPA is proposing to eliminate the minimum age for applying RUPs, which would permit teenagers to use it. Tell EPA and Congress to ban paraquat! This link will send the following message to EPA and your Congressional delegation: I urge EPA to join other countries […]

(Beyond Pesticides, February 9, 2018) Attorneys General in eleven states join Monsanto and the National Wheat Growers Association last month in challenging California’s listing of glyphosate as a carcinogen under the state’s Proposition 65 law. California added glyphosate to the list of cancer-causing chemicals in July 2017, but has since been attacked by Monsanto and its allies for carrying out state law that requires carcinogens to be labeled and monitored. The plaintiffs, led by the National Association of Wheat Growers, argue that listing glyphosate as a carcinogen under Prop 65 will irreparably harm the agriculture industry, adversely affecting farmers and consumers throughout the U.S. The case, seeking a stay of the listing, was filed in the in Federal Court in the Eastern District of California in November, 2017. Earlier last year, Monsanto lost its case before a state Superior Court in which it sought to stay the Prop 65 listing. Idaho, Indiana, Iowa, Kansas, Louisiana, Michigan, Missouri, North Dakota, Oklahoma, South Dakota and Wisconsin have filed an amicus brief in support of the preliminary injunction sought by agriculture groups against California’s Prop 65 regulation. The U.S. Chamber of Commerce and the California Chamber of Commerce filed their own amicus brief in support of […]

(Beyond Pesticides, February 1, 2018) Scientists at the European Institute for the Biology of Aging are finding new information about how Parkinson’s disease manifests itself after exposure to the herbicide paraquat, in hopes of finding ways to prevent the progression of the disease. Despite a well-established body of scientific literature linking the paraquat to Parkinson’s, and a ban on the use of the chemical in the European Union that dates back to 2007, its use is still permitted in the U.S. Many health groups, including Beyond Pesticides and organizations like the Michael J Fox Foundation are calling on the U.S. Environmental Protection Agency stop the use of paraquat by denying its upcoming reregistration. Published in the journal Cell Reports, this new research on Parkinson’s investigates the impact of “senescent” cells in the body. Senescent cells are those which, despite being able to divide, stop doing so in response to stress. This is an anti-cancer mechanism, as stress would otherwise cause the cells to multiply unchecked and create malignancies. Researchers suspected that despite the benefit of stopping cancer, senescent cells may be causing other problems in the body. Rather than dying, these cells can cause inflammation in the area around where […]

(Beyond Pesticides, January 31, 2018) Woolworths, one of Australia’s largest retailers, has decided to stop selling neonicotinoid products (neonics) linked to global declines in bee populations. This is the latest retailer in Australia to announce commitments to stop supplying the bee-toxic products. After thousands of Australians signed a petition calling on retailers to stop selling insecticides containing neonicotinoids, Woolworth announced it has, in fact, succumbed to public pressure and would join Bunnings Warehouse, Mitre 10 and Coles stores in pulling neonic products from their shelves. The week prior, retail chain Bunnings announced it would pull all items containing neonicotinoids from their shelves. Woolworth said it would stop selling the products by June 2018. The retail commitments come as a result of efforts launched by global consumer group SumOfUs that called on Australian retailers to stop selling insecticide products containing neonicotinoids, including the popular home and garden product, Confidor, which has been stocked by Woolworths and contains imidacloprid as the active ingredient. According to Australia’s The New Daily, about one-third of Australian fruit and vegetable crops are reliant on pollination. Speaking on the ban of neonic products, Katja Hogendoorn, PhD, of University of Adelaide, who researches the behavioral ecology and evolution of native bees, […]

(Beyond Pesticides, January 30, 2018) New data from the U.S. Geological Survey (USGS) reveals the year-round presence of neonicotinoids (neonics) in the Great Lakes – the world’s largest freshwater ecosystem. Neonics, which are highly toxic to aquatic organisms and pollinators, are prevalent in the tributaries of the Great Lakes with concentrations and detections increasing during planting season. This new data adds to burgeoning demand for a federal ban of these insecticides in order to safeguard vulnerable aquatic ecosystems and pollinators. The study, “Year-round presence of neonicotinoid insecticides in tributaries to the Great Lakes, USA,” sampled ten major tributaries to the Great Lakes from October 2015 to September 2016. Neonicotinoids were detected in every month sampled. At least one neonicotinoid was detected in 74 percent of the samples, with 10 percent of samples containing three neonicotinoids. The most frequently detected neonicotinoid was imidacloprid (53%), followed by clothianidin (44%), thiamethoxam (22%), acetamiprid (2%), and dinotefuran (1%). The detections of clothianidin and thiamethoxam are significantly correlated with the percentage of agricultural land use. Similarly, concentrations increased in the spring and summer months when the planting of neonic-coated seeds and broadcast applications are the highest. For instance, in the agriculturally dominated basin (corn and soybean) […]

(Beyond Pesticides, January 26, 2018) Triclosan may be on its way out in soaps and disinfectants, but its presence on toothbrushes could stick around for a long time, according to research published in Environmental Science and Technology by a group of scientists from University of Massachusetts, Amherst (UMass Amherst). The Food and Drug Administration (FDA) banned the use of over the counter triclosan-containing soap in 2016, and late last year extended the ban to include health care and hospital settings, but the toxic antibacterial can still be found in toothpaste and other consumer products. Many may have have checked their toothpaste label and switched to a non-triclosan toothpaste after the recent news, but scientists say that exposure to this persistent chemical may continue through toothbrushes, if triclosan toothpaste was previously used. To test triclosan absorption while brushing, researchers purchased 22 different toothbrushes, each with different components, from bristles only, to those with polishing cups, gum protectors, or tongue cleaners. Different toothpastes, including six with and 15 without triclosan, were also used.  A mixture used to imitate saliva was added to toothpaste and put into a vial that was then brushed with different toothbrushes over a 3 month period – the […]

(Beyond Pesticides, January 25, 2018) Monsanto’s herbicide dicamba, widely used on genetically engineered crops, will be prohibited from use in agriculture from April 16 to October 31, 2018 in Arkansas, following a vote this week by the state’s Legislative Council. Action by lawmakers was the last step needed to make the ban official after the Arkansas State Plant Board (ASPB) voted last year to continue a temporary ban on the drift and damage-prone herbicide into 2018. The ban is a win for farmers and health advocates who have suffered from drift, health effects, and crop damage as a result of widespread dicamba use, as over 29,000 people, including many Beyond Pesticides supporters, voiced their support for ASPB’s proposal when it was announced in October. Prior to the vote by the Arkansas Legislative Council lawmakers had delayed a vote on the ban, sending the proposal back to ASPB for review and potential revision. Under state law, the Legislative Council, which acts as a decision making body when the state legislature is not in session, must either approve or disapprove of regulations promulgated by ASPB; lawmakers cannot amend ASPB’s rules. Despite concerns from lawmakers friendly to the chemical industry, ASPB refused to […]

(Beyond Pesticides, January 24, 2018) Poor nutrition coupled with exposure to a notorious class of insecticides known as neonicotinoids act synergistically to significantly reduce the survival of honey bees and their colonies, according to research published by scientists from University of California, San Diego (UCSD). This is the first study to delve into the real-world effects pesticide exposure can have on honey bees also subject to nutritional stress, a common occurrence in the wild. The outcome of this research highlights the weaknesses of the U.S. Environmental Protection Agency’s (EPA) testing regime for registering pesticides, which does not account for the complex ecology surrounding catastrophic declines in honey bee and other wild pollinator populations. UCSD scientists looked at two of the most popular neonicotinoids, chlothianidin and thiamethoxam, to investigate how realistic levels of exposure to the chemicals interacted with varying levels of available food. High and low levels of both chemicals, 1/5 and 1/25 of the LD50 (amount at which 50% of honey bees exposed would die) were added to sugar syrup solution containing a range of different nutrition levels. Sugar syrup, which mimics nectar and honey, is a critical source of carbohydrates for honey bees. The bees studied were either […]

(Beyond Pesticides, January 23, 2018) The European Parliament decided to set up a special committee to look into the European Union’s (EU) authorization procedure for pesticides, in light of the controversial review of Monsanto’s glyphosate. The special committee is to assess the authorization procedure for pesticides in the EU and potential failures in how substances are scientifically evaluated and approved. The Special Committee on Plant Protection Products, which will have 30 members and a nine-month term, was voted in last week to assess the authorization procedure for pesticides in the EU; potential failures in how substances are scientifically evaluated and approved; the role of the European Commission in renewing the glyphosate license; possible conflicts of interest in the approval procedure; and the role of EU agencies, and whether they are adequately staffed and financed to fulfill their obligations. It is scheduled to meet for the first time in March. In a joint statement, Members of the European Parliament (MEPs) Marc Tarabella and Eric Andrieu, who called for the establishment of a committee last April, welcomed the move which will allow the Parliament to lay the foundations for “transparency and independence” of the European Union’s decision-making process. “The glyphosate case has […]

(Beyond Pesticides, January 18, 2018) Research published in early January 2018 has shown that — despite a partial ban on neonicotinoid insecticides instituted in 2014 — 25% of British honey is still contaminated with residue of these “potent, bee-killing” pesticides. The partial ban, which extended to flowering crops, such as oilseed rape (from which canola oil is made), was instituted by the European Union (EU) in response to evidence of serious threats to bee populations. Samples for this study came from beekeepers and were each from a single location. After the partial ban went into effect, scientists had seen some reduction in the contamination rate of neonicotinoids in honey, from greater than 50% prior to the ban. This study demonstrates that these powerful pesticides nevertheless remain common in agricultural areas, posing serious threats to bees (and other pollinators). This discovery is likely to accelerate pressure on the EU to ban all outdoor use of neonicotinoids, with a vote coming perhaps as soon as in the next few months. “While the frequency of neonicotinoid contaminated samples fell once the EU ban was in place, our data suggest that these pesticides remain prevalent in the farming environment,” said Ben Woodcock, of the UK’s […]

(Beyond Pesticides, January 17, 2018) The organophosphate insecticides chlorpyrifos, malathion, and diazinon are likely to jeopardize the continued existence of endangered species and adversely modify their critical habitats, according to the newly released report from the National Marine Fisheries Service (NMFS). The insecticide cholorpyrifos, whose ban was rescinded by the Trump Administration last year, despite overwhelming evidence of neurological and brain damage to children, is once again being shown to be too toxic for continued use. Under Section 7 of the Endangered Species Act (ESA), any agency action requires a finding that it “is not likely to jeopardize the continued existence of any endangered species or threatened species or result in the destruction or adverse modification of habitat.” The December 31, 2017 Biological Opinion from NMFS followed an ecological assessment that relied upon multiple lines of evidence to determine effects to species and their designated habitats. These include “the direct and indirect toxicity of each chemical to aquatic taxa groups (e.g. fish, mammals, invertebrates); specific chemical characteristics of each pesticide (e.g. degradation rates, bioaccumulation rates, sorption affinities, etc.); expected environmental concentrations calculated for generic aquatic habitats; authorized pesticide product labels; maps showing the spatial overlap of listed species’ habitats with pesticide use areas; […]

(Beyond Pesticides, January 16, 2018) In spite of findings that neonicotinoid (neonic) insecticides pose both acute and chronic risks to pollinators, aquatic life, and birds, the U.S. Environmental Protection Agency (EPA) is seeking comment that could support their continued use. Comments are due by February 20, 2018.  Tell EPA that neonics pose unacceptable risks to pollinators, aquatic life, and birds! And, ask your Congressional delegation push EPA to do the right thing. Last month, EPA released preliminary ecological (non-pollinator) assessments for the neonicotinoids clothianidin, thiamethoxam, dinotefuran, and the terrestrial ecological assessment for imidacloprid, finding that these pesticides pose both acute and chronic risks to aquatic life and birds. Treated seeds are identified as posing the highest dietary risks to birds, confirming previous research that neonics are highly hazardous not only to bees, but also, to birds, aquatic life, and other non-target organisms. However, EPA’s assessments also cover spray treatments. EPA opened the public comment period for these assessments on December 15, 2017. Along with outlining the risks identified in the assessments, the agency is especially requesting feedback on the benefits of continued use of the neonics on cotton and citrus crops, identified in last year’s pollinator assessments as posing risks to honey bees. […]

(Beyond Pesticides, January 12, 2018) Honey bees display a concerning attraction to the herbicide glyphosate and the fungicide chlorothalonil at certain concentrations, new research from scientists at the University of Illinois (UIL) reveals. Results are reminiscent of a 2015 study published in the journal Nature, which found that honey bees display a preference for foods treated with neonicotinoids, a class of insecticides implicated in global pollinator declines. Since the crisis became public knowledge in 2006, managed honey bees have experienced unsustainable levels of colony loss, and one in four species of native bees in North America and Hawaii are at risk of extinction. This new research adds to growing concerns that, while neonicotinoids continue to play a primary role in the pollinator crisis, their elimination would still leave a myriad of other toxic chemical threats to the recovery of these critical species, upon which so much of our food supply relies. UIL scientists investigated honey bees’ preference for a range of pesticides as well as a number of naturally occurring chemicals that honey bees would likely encounter in the field. In the experiment, pollinators were put in a large enclosure and allowed to fly to different feeders stocked with either […]

(Beyond Pesticides, January 8, 2018)  With a long-documented history of children’s exposure to pesticides that drift from agricultural fields to school yards, California’s new regulations establishing no-spray buffers took effort January 1, as labor and public health groups acknowledged the progress and inadequacy of the measure. The new rule, DPR 16-004 Pesticide Use Near Schoolsites, adopted by the California Department of Pesticide Regulation (DPR), prohibits many pesticide applications within a quarter mile of public K-12 schools and licensed child day-care facilities during school hours, Monday through Friday between 6 a.m. and 6 p.m. This includes all applications by aircraft, sprinklers, air-blast sprayers, and all fumigant applications. In addition, most dust and powder pesticide applications, such as sulfur, will also be prohibited during this time. The new rule was announced in November, 2017. Advocates say the new rules fail to address persistent low-level exposures associated with the use of the pesticides near schools, which are in agricultural areas that are disproportionately Latino and from farmworker families. There is continuing concern about children’s exposure to hazardous pesticides because children use school grounds after school hours and on weekends and residues from drift may remain on school grounds. Many pesticides used are persistent and systemic, lingering […]