(Beyond Pesticides, July 2, 2014) According to a new study, few obstetricians offer their pregnant  patients advice on how to avoid environmental toxins that might harm their babies, even though doctors recognize that exposure to chemicals like pesticides, bisphenol-A (BPA), and metals can affect  a pregnancy. The study recommends that the medical community improve medical education and training, develop recommendations for prevention and less toxic alternatives, as well as lend support to policy change. The first of its kind study of prenatal counselling, published in the journal  PLOS ONE, Counseling Patients on Preventing Prenatal Environmental Exposures – A Mixed-Methods Study of Obstetricians, found that U.S. obstetricians and gynaecologists feel they lack the medical education and training, and evidence-based guidelines and tools for communicating potential environmental risks to patients. Exposure to environmental toxins, the researchers from the University of California, San Francisco (UCSF) found, is rarely discussed with pregnant patients, even though a national survey shows that 80 percent of physicians agree they should play a part in reducing patients’ exposure to toxins. But, of the 2,500 respondents, only one in five routinely asked  their  patients about these exposures, and just one in 15 said they received training on the harmful […]

(Beyond Pesticides, June 24, 2014) Research from the University of California, Davis CHARGE (Childhood Autism Risks from Genetics and the Environment) study finds that pregnant women who lived within a mile of agricultural fields treated with insecticides are more likely to have their child develop autism. The results of the CHARGE study, published in Environmental Health Perspectives, strengthens calls from public health and environmental groups urging regulators take a precautionary approach to agricultural chemicals and institute increased protections for those who live, work, or go to school near pesticide-treated fields. The CHARGE study looked at pregnant women’s addresses to determine their location relative to fields treated with pesticides. For women who lived less than one mile from crops sprayed with organophosphate insecticides during their pregnancy, researchers found the likelihood of their child being diagnosed with autism increased 60%. Women in the second trimester living near fields treated with chlorpyrifos, a widely used organophosphate insecticide banned for household use in 2001, are 3.3 times more likely to have their children diagnosed with autism. In response to a legal petition, the U.S. Environmental Protection Agency (EPA) in 2012 instituted risk mitigation measures for chlorpyrifos, including reduced application rates and no-spray buffer zones […]

(Beyond Pesticides, June 9, 2014) A recent talk given by Donald Weston, PhD, a professor emeritus in UC Berkeley’s Department of Integrative Biology, to a community group in San Jose, California warned residents about the dangers that  lawn care insecticides present to  local aquatic life. The talk focused on the problems synthetic pyrethroids and fipronil can have on Hyalella azteca and Chironomus dilutes. Increasing levels of pesticide runoff in local stream systems have not only led to decreased populations of these aquatic crustaceans, but also populations that have become resistant to pesticides. Aquatic invertebrates are extremely sensitive to pesticide runoff and different states around the country have struggled with creating pesticide regulations that foster a healthy aquatic ecosystem. A good way to reduce pesticide runoff is to transition away from toxic land care methods and adopt organic practices. Hyalella crustaceans, a tiny shrimp-like animal, are hypersensitive to pyrethroids, which are a class of insecticides used by professional lawn care companies and found in common products like Raid and mixed with fertilizer products like Scotts Turf Builder under the name SummerGuard. Chironomus dilutes, a red worm-like invertebrate, is sensitive to fipronil, which is used to kill fleas on dogs and cats […]

(Beyond Pesticides, June 6, 2014) On June 4,  after a two year dispute between the Environmental Protection Agency (EPA) and a coalition of conservation organizations and fishing groups, an agreement  was finally reached to set reasonable no-spray buffer zones to protect salmon from five harmful insecticides: diazinon, chlorpyrifos, malathion, carbaryl, and methomyl. These buffer zones protect salmon habitat by stopping aerial spraying of pesticides within 300 feet, and ground based spraying within 60 feet of salmon supporting waters. According to the agreement, it also provides detailed notifications to state regulators, pesticide applicators, farmers and the public about the mandatory no-spray buffer zones. These stipulations will remain in place until the National Marine Fisheries Service has completed their analysis of the impacts of those five pesticides.  Then, once the analysis is completed, EPA will execute permanent protections based on their findings. EPA is required by law under the Endangered Species Act to protect what little salmon are left on the Pacific Coast. Salmon are a  critical indicator of how well we are maintaining both marine and terrestrial ecosystems, because their habitats are in streams, lakes, rivers, estuaries and the ocean. The fish  are extremely sensitive to changes in water quality, and […]

(Beyond Pesticides, June 5, 2014) Environmental advocacy groups filed an Administration Objection and a court appeal last week in order to challenge the Environmental Protection Agency’s (EPA) refusal to quickly correct errors in pesticide registrations and immediately implement measures to protect children from exposure to dangerous pesticides that drift from fields during and after application. EPA’s continued refusal to protect children’s health from pesticide drift is being criticized by numerous environmental, health, and farmworker advocacy groups. The groups, which include  United Farmworkers, Pineros y Campesinos Unidos del Noroeste, Pesticide Action Network of North America, Sea Mar Community Health Centers, California Rural Legal Assistance Foundation, Physicians for Social Responsibility, and Farm Labor Organizing Committee, originally filed a petition back in 2009 titled “Pesticides in the Air””Kids at Risk: Petition to EPA to Protect Children from Pesticide Drift (2009).” The petition asked that the agency properly comply with an existing law that requires EPA to protect children’s health from exposure to pesticides that drift from fields and orchards. After a more than four-year wait and a court appeal, EPA finally provided a response last March. These groups object to EPA’s recent response to their 2009 petition on the basis of two issues, […]

(Beyond Pesticides, May 28, 2014) A statewide pilot pesticide sampling project has found over 20 different types of pesticides in Hawaiian waterways, some of which are no longer registered for use in Hawaii. State officials believe the pesticides, many detected in urban areas, are from residential and golf course applications. These preliminary findings help highlight the need for local oversight of pesticide use, currently a controversial issue in the state. Conducted in partnership with the Hawaiian Department of Agriculture, the U.S. Geological Survey (USGS) and the Hawaiian Department of Health, the survey-study finds herbicides like glyphosate (Roundup) and atrazine, as well as a fungicide that is no longer registered for use in the state, contaminating the state’s waterways. The study measured pesticides in surface waters and in sediment at multiple locations in Hawaii. 25 herbicides, 11 insecticides and 6 fungicides were detected, with atrazine the most commonly found. This pilot survey responds to growing community concerns about the impacts of pesticides on local communities and ecosystems, and provides preliminary information on pesticide residues in state waterways. Recently, Kauai County passed an ordinance —Ordinance 960—  that requires public disclosure of pesticides used and the location of genetically engineered (GE) crops, as […]

(Beyond Pesticides, May 20, 2014) Pittsburgh sportscaster Rich Walsh is suing multinational chemical companies after his father’s untimely death from cancer in 2009. According to a story from local Pittsburgh station WTAE, Mr. Walsh’s father, Tom Walsh, was diagnosed with acute myeloid leukemia in 2008, after a career as a golf course superintendent. “He loved golf. He loved working outside. He loved to take care of golf courses,” Rich told WTAE. Rich’s lawsuit was filed against Monsanto, Bayer CropScience, BASF, Syngenta, Dow Agroscience, Deere and Company, and John Deere Landscapes in 2010. Genetic testing from Tom’s oncologist showed chromosomal alterations as a result of years of working with pesticides, the only chemicals Mr. Walsh ever worked with. Part of the log books he kept throughout his career included the pesticides he applied, which included the insecticides Dylox and Dursban, active ingredients trichlorfon and chlorpyrifos respectively, and the fungicides Daconil and Chipco, active ingredients chlorothalonil and iprodione. All of these chemicals have been shown to be likely carcinogens, according to Beyond Pesticides’ Pesticide Gateway or Pesticide Induced Diseases Database. Chlorpyrifos, for instance, was banned for homeowner use back in  2001, but uses on agriculture and golf courses were allowed to continue […]

(Beyond Pesticides, May 7, 2014) A new report from the California Department of Public Health finds 36 percent of public schools in the state have pesticides of public health concern applied within a quarter mile of the school. Persistent and toxic pesticides like chlorpyrifos, methyl bromide, and malathion are among the pesticides found to be applied near schools. The report also finds that Latino children are also more likely to attend schools near areas with the highest use of pesticides of concern. The report, “Agricultural Pesticide Use near Public Schools In California,” released this month, looked at 2,511 schools in the 15 California counties with the highest overall use of farm pesticides in California for 2010, and finds that counties in the southern part of the Central Valley had the most schools near farms where pesticides were applied. Fresno County had the highest number of schools —131 — with pesticides applied nearby. Five percent of schools are within a quarter mile of where the highest volumes of pesticides are used: 2,635—28,979 pounds of active ingredient. Latino children are 46 percent more likely than white children to attend schools where pesticides of concern were applied nearby. The report’s findings are being […]

(Beyond Pesticides, February 10, 2014)    A recent study has found that exposure to pyrethroids is increasing among children and adults. The study also finds that children are still widely exposure to chlorpyrifos, an organophosphate chemical that has been banned for household use for over 12 years. This is not the first study to find high concentrations of pyrethroids in residential, but it may be the first to evaluate correlations between pesticide dust concentration and concentration of pesticides in children’s urine. The study, Urinary Pyrethroid and Chlorpyrifos Metabolite Concentrations in Northern California Families and Their Relationship to Indoor Residential Insecticide Levels,  conducted by researchers at the University of California, Davis, analyzed urine samples from 90 adults, 83 children, and 88 floor wipe samples from participants’ kitchen floors. The participants were 90 northern Californian families who had children born between 2000 and 2005, with the samples collected from 2007-2009.   These samples were analyzed for concentrations of pyrethroids, pyrethroid metabolites, chlorpyrifos, and chlorpyrifos metabolites.  The study found pyrethroid metabolites in 63 percent of all urine samples with concentrations twice as high as levels reported in a national 2001-2002 study. In children, higher concentrations of pyrethroids found in floor wipes were associated […]

(Beyond Pesticides, February 6, 2014) We know that pesticides and bees don’t mix and that particular pesticides, such as neonictinoids, pose significant threats to bee populations worldwide, but a recent study conducted by researchers at Pennsylvania State University have identified that it is “the mix” of the many chemicals in the environment that pose a significant threat to honey bee survival. Looking at the four most common pesticides detected in pollen and wax –fluvalinate, coumaphos, chlorothalonil, and chloropyrifos, Wanyi Zhu and other researchers have assessed the toxic impacts of these pesticides on honey bee larvae at real world exposure levels; that is, levels that are found in existing hives outside of a laboratory. But these researchers go beyond the usual one-chemical analysis in their study,  Four Common Pesticides, Their Mixtures and a Formulation Solvent in the Hive Environment Have High Oral Toxicity to Honey Bee Larvae. Rather than just looking at the pesticides in their individual, out-of-the-bottle form, they also mixed them up and broke them apart. Why did they take this mixed-up approach? “Recently, one hundred and twenty-one different pesticides and metabolites were identified in the hive with an average of seven pesticides per pollen sample, including miticides, insecticides, […]

(Beyond Pesticides, October 31, 2013) Bats get a bad rap on Halloween with their image synonymous with blood-sucking vampires; however, the real scary thing about bats is that they are disappearing due to a myriad of threats, including pesticides, habitat destruction, and the horrible white-nose syndrome (WNS), a disease caused by the fungus Pseudogymnoascus (Geomyces) destructans. Researchers are reporting an even bleaker picture, finding very little evidence of what might stop the disease from spreading further and persisting indefinitely in bat caves. The new study, from researchers at the Illinois Natural History Survey at the University of Illinois, found that the fungus can make a meal out of just about any carbon source likely to be found in caves, said graduate student Daniel Raudabaugh, who led the research under the direction of survey mycologist Andrew Miller, Ph.D. The study, Nutritional Capability of and Substrate Suitability for Pseudogymnoascus destructans, the Causal Agent of Bat White-Nose Syndrome is published in PLOS One. “It can basically live on any complex carbon source, which encompasses insects, undigested insect parts in guano, wood, dead fungi and cave fish,” Mr. Raudabaugh said. “We looked at all the different nitrogen sources and found that basically it can […]

(Beyond Pesticides, October 9, 2013) California Governor Jerry Brown has signed Assembly Bill 304, a bill designed to protect people from harmful pesticides identified as Toxic Air Contaminants (TACs). The bill will require the Department of Pesticide Regulation (DPR) to develop mitigation measures for the use of harmful pesticides that vaporize and drift from application sites. California, a major user of pesticidefumigants, has tried to tackle to prevalence of pesticide drift in the state, and is one of few states that monitor air-borne pesticides. AB 304: “Pesticides: toxic air contaminant: control measures” introduced by Assembly member Das G. Williams (D-Santa Barbara), gives the DPR two years to reduce the effects of harmful air toxins once the department determines that additional mitigation measures are necessary. Fumigants are some of the most dangerous pesticides on the market and include the controversial methyl iodide. They are applied in large quantities, vaporize easily, drift away and expose nearby farmworkers and other community members to harm, with health effects linked to headaches, vomiting, severe lung irritation, and neurological effects. Some fumigants are linked to cancer, reduced fertility, birth defects and higher rates of miscarriage. “Californians have a right to breathe clean air, and not worry […]

(Beyond Pesticides, August 7, 2013) California’s Department of Pesticide Regulation (DPR) has detected the highly toxic pesticide chlorpyrifos in nearly 30% of air tests that are being conducted in three high risk communities surrounded by intensive agriculture. This result is part of DPR’s  2012 results from its  air-monitoring network (AMN)  sampling near the towns of  Ripon, Salinas and Shafter, in Kern County.  The state has been running tests for air particles from methyl bromide and 32 other pesticides and breakdown products and measuring the results against screening levels established by DPR. No state or federal agency has set health standards for pesticides in air. While the state believes the levels found present an acceptable risk, critics maintain that the state’s sampling is not representative of peak agricultural exposures and question whether any level of a toxicant in air is reasonable under the law, given the viability of alternative agricultural practices that do not rely on these chemicals. DPR said no residues were detected in 94.5 percent of the samples it collected, and the levels in the rest were well below thresholds for protecting people from pesticide-related illnesses. The communities in the study were selected from a list of 226 communities […]

(Beyond Pesticides, July 22, 2013) Organophosphate pesticide poisoning from contaminated school lunches is suspected as the cause of deaths for at least 25 children in India. The children, aged four to 12, became sick after eating a lunch provided to them by the school. Several reports suggest the rice or cooking oil used to prepare the food contained unsafe levels of organophosphates, a highly toxic class of pesticides that have the same mechanism of action as nerve gasses. In the U.S. most organophosphates pesticides were phased out of residential use; however, these neurological poisons are still widely used on agricultural crops and for mosquito control. The schoolchildren began fainting soon after eating the contaminated food, and within hours at least 25 children were pronounced dead. Authorities discovered a container of organophosphate pesticides next to the cooking oil, but were not able to determine if this was the source of the poisoning or if the food itself was tainted with organophosphates. The school cooks, who both had children at the school that either fell ill or died from eating the food, told authorities that the cooking oil appeared different than usual, but the principal told them to use it anyway. The […]

(Beyond Pesticides, July 19, 2013) A recent report by the U.S. Geological Survey (USGS) examines the health of the nation’s streams over 20 years and finds that streams nationwide are severely degraded by humans, exhibiting elevated levels of pesticides and nutrients as well as streamflow modifications. Overall, the report finds that 83 percent of streams in agricultural and urban areas contain at least one aquatic community that was altered, or in other words, negatively affected. With waterways in the U.S. increasingly imperiled from various agents including agricultural and industrial discharges, nutrient loading (nitrogen and phosphorus), and biological agents such as pathogens, assessments such as these provide further impetus to protect water quality for both human health and the environment. The report, entitled “Quality of Our Nation’s Waters: Ecological Health in the Nation’s Streams, 1993-2005,” describes the health of three biological communities ””algae, macroinvertebrates, and fish”” to  measure the overall quality of streams. A stream’s ability to support these community structures can directly measure the health of waterways. The report assesses streamflow modifications and measures over 100 chemical constituents in water and streambed sediments. The report is a comprehensive assessment of the variety of factors that contribute to stream health declines, […]

(Beyond Pesticides, July 9, 2013) A recent pesticide contamination incident in Great Britain’s Kennet River has decimated aquatic invertebrate populations on a ten mile stretch of river between the towns of  Marlborough and Hungerford. The contamination occurred after a spill of the toxic pesticide chlorpyrifos entered a Marlborough sewage system. The lack of aquatic invertebrates could lead to a dramatic decline of the river’s chalk trout population. A similar incident occurred in Great Britain on the Wey River in 2003, and in Sussex Ouse in 2001. This recent calamity helps to underscore the importance for the U.S. Environmental Protection Agency (EPA), across the Atlantic, to fully implement pesticide restrictions that U.S. conservation groups are seeking to enforce through court action. The damage to the U.K. river may have been caused by, according to an Express article, only two tablespoons of the neurotoxic insecticide chlorpyifos. Members of the public have been advised by Britain’s Environment Agency to avoid skin contact with the water and not to eat fish caught from the river.  The contamination has occurred at the height of fly-fishing season. Environmental organizations are afraid that a decline in the number of aquatic invertebrates could lead chalk trout and other […]

(Beyond Pesticides, February 27, 2013) Last week a U.S. Court of Appeals found that pesticide restrictions to protect endangered salmon and steelhead proposed by the National Marine Fisheries Service (NMFS) in its Biological Opinion (BiOp) were “arbitrary and capricious,” supporting Dow AgroSciences LLC and other pesticide makers’ claims that the restrictions were based on “unsupported assumptions and conclusions.” The BiOp concluded that the pesticides chlorpyrifos, malathion and diazinon, three of the most highly toxic pesticides still in use, pose risks to salmon, steelhead and their habitat. In collaboration with NMFS, the U.S. Environmental Protection Agency (EPA) is tasked with implementation of any recommended pesticide restrictions to satisfy the mandate under Section 7 of the Endangered Species Act (ESA). However, to date, EPA has not taken any actions to implement any of the proposed measures to protect endangered salmon and steelhead, in part due to challenges from industry. Dow AgroScience LLC, Makhteshim Agan of North America, Inc., and Cheminova, Inc. USA first filed a suit in 2009 (Dow Agrosciences v. National Marine Fisheries ), challenging the NMFS’ 2008 BiOp to restrict  chlorpyrifos, malathion and diazinon as being based on numerous unsupported assumptions and conclusions, and faulty analyses. The U.S. District Court […]

(Beyond Pesticides, February 21, 2013) On February 6, the U.S. Environmental Protection Agency (EPA) released its preliminary volatilization assessment for the registration review of chlorpyrifos, finding that vapor phase chlorpyrifos may be emitted from treated fields at levels resulting in exposure to children and others who live, work, attend school, or otherwise spend time nearby.  In some circumstances, these bystanders may be exposed to chlorpyrifos and/or the transformation product chlorpyrifos-oxon at concentrations that could cause adverse effects. Citing uncertainties, the agency is requesting comments by March 8, 2013 on the potential risks to children and other bystanders from volatilization of chlorpyrifos from treated crops. EPA’s preliminary volatilization assessment is also in response to a petition filed by the Natural Resources Defense Council (NRDC) and the Pesticide Action Network North America (PAN) in 2007, which requested that the agency revoke all tolerances and cancel all registrations for chlorpyrifos. In a letter to NRDC and to PAN dated January 25, 2013, updating these groups on EPA’s response to their September 12, 2007 joint petition regarding chlorpyrifos, EPA stated that, “This assessment represents a significant advancement in the evaluation of pesticide risks, as it will be the first probabilistic assessment of the risks […]

(Beyond Pesticides, January 16, 2013) Children living near chemical-intensive or conventional plantations in Costa Rica are exposed to twice as much of the insecticide chlorpyrifos compared to children living near organic plantations, a study reports. More than half the children, mostly from indigenous tribes- Ngäbe and Bribri – have a  higher daily exposures than allowed under U.S. federal standards. Chlorpyrifos is linked to neurological effects, especially in children, and is still permitted for use on crops. The study,  Indigenous children living nearby plantations with chlorpyrifos-treated bags have elevated 3,5,6-trichloro-2-pyridinol (TCPy) urinary concentrations, was lead by Berna van Wendel de Joode, PhD  (Central American Institute for Studies on Toxic Substances (IRET), Universidad Nacional, Heredia, Costa Rica). It was conducted in Costa Rica’s banana and plantain plantations in the Talamanca region, and  targeted villages situated nearby to the plantations where blue bags treated with chlorpyrifos are routinely used to protect banana and plantain crops from pests. Two villages under study are near plantations that use chlorpyrifos-treated bags, while the organic village is near several plantations  that use little or no insecticide. For 140 children, aged 6 — 9, mostly indigenous Ngäbe and Bribri, parent-interviews and urine samples were obtained. Chlorpyrifos’ environmental levels […]

(Beyond Pesticides, November 1, 2012) Conservation groups and fisherman have filed lawsuits against U.S. Environmental Protection Agency (EPA) demanding that pesticide restrictions be implemented around salmon streams. Regulatory buffers surrounding streams and watersheds have not been fully implemented by EPA, though it is required to by law. The National Marine Fisheries Service (NMFS), which promotes sustainable fisheries, recovery of protected species, and the health of coastal marine habitats, commented that common pesticides should not be sprayed within 500 to 1000 feet of waterways. Its comments focused on the impacts of chlorpyrifos, diazinon and malathion, which jeopardize the health of federally protected salmon species. Despite this and other evidence that supports the need for buffer zones, EPA has withheld action until the 4th U.S. Circuit Court of Appeals resolves the case. EPA is mandated by law to protect dwindling species like salmon under the Endangered Species Act. Salmon, in particular, are a good indicator of how well we are taking care of both the marine and terrestrial ecosystems, because they live in streams, lakes, rivers, estuaries, and open ocean. They are also extremely sensitive to changes in water quality and upstream changes to the river flow, turbidity, and temperature. It goes […]

(Beyond Pesticides, August 28, 2012) New research reveals that bats may be at greater risk from pesticide exposure than previously suspected. When foraging at dusk, bats can be exposed to agricultural chemicals by eating insects recently sprayed with pesticides. A study from the University of Koblenz-Landau in Germany reveals that bats, due to their long life span and tendency to only have one offspring at a time, are particularly sensitive to reproductive effects from pesticides. The study, “Bats at risk? Bat activity and insecticide residue analysis of food items in an apple orchard,” published in Environmental Toxicology and Chemistry, details the health effects of bats foraging on insects in an apple orchard after it was sprayed with the insecticides fenoxycarb and chlorpyrifos. After field applications of the pesticides, scientists measured the remaining chemical residues on flies, moths and spiders for two weeks. The highest residues were recorded on leaf dwelling insects and spiders, while lower contamination was found for flying insects. Based on this data scientists calculated exposure scenarios for different bat species, each with different feeding habits, and found that those which fed off insects from the leaves of fruit trees to be most affected. Researchers indicated that current […]

(Beyond Pesticides, August 10, 2012) A new study is the first to find a difference between how boys and girls respond to prenatal exposure to the insecticide chlorpyrifos. Researchers at the Columbia Center for Children’s Environmental Health (CCCEH) at the Mailman School of Public Health found that, at age 7, boys had greater difficulty with working memory, a key component of IQ, than girls with similar exposures. On the plus side, having nurturing parents improved working memory, especially in boys, although it did not lessen the negative cognitive effects of exposure to the chemical. Results are published online in the journal Neurotoxicology and Teratology. In 2011, research led by Virginia Rauh, ScD, Co-Deputy Director of CCCEH, established a connection between prenatal exposure to chlorpyrifos and deficits in working memory and IQ at age 7. Earlier this year, a follow-up study showed evidence in MRI scans that even low to moderate levels of exposure during pregnancy may lead to long-term, potentially irreversible changes in the brain. The latest study, led by Megan Horton, PhD, explored the impact of sex differences and the home environment on these health outcomes. Dr. Horton and colleagues looked at a subset of 335 mother-child pairs enrolled […]

(Beyond Pesticides, July 25, 2012) A Texas border study has found that air samples in the homes of pregnant Hispanic women contain multiple household pesticides that could harm fetuses and young children. The first study of its kind conducted by the School of Medicine at The University of Texas Health Science Center San Antonio, finds traces of both household and agricultural pesticides that have been linked to disorders such as autism and attention deficit hyperactivity disorder. The researchers sampled air in 25 households, finding at least five pesticides in 60 percent of the dwellings. Nine other pesticides were identified in less than one-third of the homes. All the women were in the third trimester of pregnancy, when the fetal brain undergoes a growth spurt. Numerous studies have reported birth defects and developmental problems when fetuses and infants are exposed to pesticides, especially exposures that adversely affect mental and motor development during infancy and childhood. This new report is in the summer issue of the Texas Public Health Journal sent to members this week. The study found 92 percent of air samples contained o-phenylphenol, which is used as a fungicide, germicide and household disinfectant, while 80 percent of samples contained chlorpyrifos, […]