Image: Art Page submission from Sara Grantham, “Sunflower Pollinators”  (Beyond Pesticides, August 23, 2024) A study in Science of The Total Environment calculates and compares pesticide risk in 594 wild bee species associated with crops in North America. Current pesticide risk assessments that analyze effects on bees primarily focus on a limited subset of species and do not provide comprehensive protection of all wild bees. “Species commonly proposed as models for pesticide risk assessments may not accurately represent risk for those bee species facing the highest potential risk in agricultural contexts,” the authors postulate. The researchers continue, “This study presents a novel approach to characterize and compare the relative potential pesticide risk among wild bee species of their association with crops in North America using suites of intrinsic bee traits to quantify species’ vulnerability and extrinsic factors based on the toxic load of crops for bees and the strength of each species’ association with those crops.” In considering multiple factors that vary by species and determining potential harm to each from pesticide exposure, this study highlights the inadequacies of the current risk assessment process used by the U.S. Environmental Protection Agency (EPA).    The system for risk assessment for pesticides that […]

(Beyond Pesticides, August 21, 2024) A literature review, published this month in the Journal of Agricultural and Food Chemistry, explores levels of pesticide residues found in samples of human urine with environmental exposure and dietary intake and confirms prior findings about the benefits of an organic diet. Similar to past findings, lower concentrations of chemicals are detected in the urine of participants who report eating an organic diet. By analyzing 72 scientific research studies published between 2001 to 2023, the review assesses routes of exposure and “explores urinary concentrations and detection frequency of metabolites of organophosphates and pyrethroids, as well as herbicides such as 2,4-D and glyphosate,” the authors say. While “exposure to pesticide residues is influenced by a variety of demographic factors, including occupation, agricultural practices, seasonal variations, residence, diet, age, and gender,” the authors say, the concentrations of pesticides and their metabolites in human urine highlights the disproportionate risk to certain groups as well as the overall threat to the health of humans and the environment. Pesticide exposure can occur from dermal/skin contact or inhalation, through residence or work, and with dietary intake. “Pesticides in urine can be detected as parent compounds, specific metabolites corresponding to a specific […]

(Beyond Pesticides, August 14, 2024) Pesticide exposure is linked to negative birth outcomes in a recent study in the American Journal of Epidemiology. This study adds to that body of science, but is novel research since, “Epidemiological studies of pesticide exposures and stillbirth in the United States have not been published in the past two decades, a time period that has seen dramatic changes in pesticide use compared to the 20th century,” the authors state. The study analyzes Arizona pesticide use records and birth certificates from 2006-2020. Researchers correlate mothers living within 500 meters of any pyrethroid, organophosphate (OP), or carbamate insecticide applications during specific windows before and during pregnancy with stillbirth. The authors focus on exposure during the prenatal period, as it is a susceptible time frame in which any contact with pesticides can negatively impact health. Numerous studies report several adverse birth and childhood outcomes with prenatal exposure. To link pesticide exposure and negative birth outcomes, Arizona records that encompass 1,237,750 births, 2,290 stillbirths, and 27 pesticides were analyzed. The authors “evaluate associations of pyrethroids, OPs, and carbamate insecticides with stillbirth by using data from the Arizona Pregnant women’s Environment and Reproductive outcomes Study (Az-PEARS), a project that […]

(Beyond Pesticides, June 5, 2024) Individuals living near chemical-intensive agricultural environments have heightened risk of Alzheimer’s disease relative to the general population, according to a study published earlier this year in Psychiatry Research. This finding builds on existing peer-reviewed studies that document the relationship between chronic pesticide exposure and elevated risk of neurodegenerative disorders including Alzheimer’s disease, as well as Parkinson’s disease, dementia, multiple sclerosis (MS), and Huntington’s disease. In light of the mountains of scientific evidence, advocates continue to demand for a wholesale transformation of agricultural and land management systems to one based in organic principles in alignment with the U.S. National Organic Program. Study Analysis This study was published online on May 1, 2024 with the full entry to be published in July 2024. The researchers are physicians, health professionals, and professors at the University of Almeria in southern Spain, specifically working in the Health Research Center and the Department of Nursing, Physiotherapy and Medicine. There is also a researcher, Cristofer Ruiz-González, who works at the Torrecárdenas University Hospital also located in Almeria, Spain. Researchers gathered case information from over 40,000 patients between 2000 and 2021 living in demarcated health care districts with high and low levels of […]

(Beyond Pesticides, May 10, 2024) A study published by scientists in France from La Rochelle University’s Chizé Center for Biological Studies, in collaboration with the University of Strasbourg and the University of Burgundy, finds lower pesticide load in chicks from a bird of prey species in areas with organic farming. A correlation between lower numbers of pesticides in the blood of birds with the presence of organic farms surrounding the habitats was determined after analyzing 55 Montagu’s harrier (Circus pygargus) nestlings from 22 different nests in southwestern France. As the percentage of organic agriculture around the nests increased, there was a significant decrease in the quantity and types of pesticides detected within the chicks’ blood.  In beginning this study, the scientists hypothesized that “the application of organic farming practices is expected to reduce contamination levels in the environment and consequently in wildlife.” They also referenced studies, such as a soil study, that aided in this speculation: “In an analysis of topsoil samples collected across Europe, samples from organic farms showed significantly fewer pesticide residues and in lower concentrations than those from conventional farms … [with] 70 to 90% lower concentrations.”   This study screened for 104 total compounds, 28 of which […]

(Beyond Pesticides, March 7, 2024) As the threats to health, biodiversity, and climate converge in agricultural policy and practices, the question of defining the fundamental changes necessary to reverse these existential crises takes on life-sustaining importance. Despite the existence of an organic community with governing stakeholders (farmers, consumers, conservationists, retailers, processors, inspectors, and scientists) that has evolved over at least seven decades and is codified in the Organic Foods Production Act (OFPA) of 1990, the term “regenerative” is now increasingly being advanced as a loosely defined alternative to the organic standard and label, which is transparent, defined, certified, enforced, and subject to public input. The publication AgFunderNews (AFN) last month published its updated “2024 list of agrifood corporates making regenerative agriculture commitments,” a who’s who of the largest food and agribusiness corporations worldwide. The list includes companies such as ADM, Cargill, Danone, General Mills, Tyson, Unilever, Walmart, and more with commitments to millions of acres in their supply chain practicing “regenerative” agriculture with target dates ranging from 2024 to 2050. The AFN author reporting on the “regenerative” trend states, “[O]ne big challenge is that ‘regenerative agriculture’ still has no set definition. While that still holds true, the bigger observation in […]

(Beyond Pesticides, January 26, 2024) In addition to maternal (mothers) exposure, children experience exposure to pyrethroid insecticides earlier in life as levels significantly increase post-natal (after birth), according to a study published in Frontiers in Public Health. This study is one of the few studies to investigate pyrethroid exposure concentrations in the urine of newborns and children within their first year of life. However, this research reiterates what many other studies demonstrate on pyrethroids’ impacts on children’s health, primarily due to their notorious neurotoxic properties. The findings indicate that exposure to pyrethroids during pregnancy and early childhood exposure has links to adverse health effects, including neurodevelopmental delays (e.g., autism), behavioral issues (e.g., attention deficit [hyperactivity] disorder), and endocrine disruption (e.g., delay in puberty). Pesticide exposure during pregnancy is of specific concern as health effects for all life stages can be long-lasting. Just as nutrients are transferable between mother and fetus, so are chemical contaminants. Studies find pesticide compounds in the mother’s blood can transfer to the fetus via the umbilical cord. Therefore, pesticide exposure during pregnancy affects both the mother and child’s health. Beyond Pesticides has covered a variety of pregnancy risks from pesticides and other toxic chemicals, including these in just […]

(Beyond Pesticides, August 30, 2023) Invasive yellow-legged hornets have been spotted near Savannah, Georgia, causing concern among agriculture officials. These hornets are known for their ability to prey on honeybees and other pollinators, and their presence in the United States is a cause for alarm. This is the first time a live specimen of this species has been detected in the open United States, according to the Georgia Department of Agriculture. The hornets, which are native to Southeast Asia, have been spotted in other parts of the world, including Europe, where they have caused significant damage to bee populations. They are considered “invasive,” which means the hornet is not native and officials expect their introduction to result in economic, environmental, or health-related damage to humans, animals, plants, or the environment. In response to the sighting in Georgia, officials are taking action to eradicate the hornets before they can cause any harm to US agriculture. One of the methods being used to eradicate the hornets is the localized use of the highly toxic insecticide cypermethrin on nests. The pesticide has been registered for use in agriculture and residential pest control since the 1970s. It kills insects such as mosquitoes, flies, ticks, […]

(Beyond Pesticides, February 22, 2023) Combining neonicotinoid insecticides with other commonly used pesticides can result in synergistic effects on honey bees, increasing toxicity more than any individual chemical could, according to research published in Scientific Reports earlier this month. The data highlight the grave inadequacy of the U.S. Environmental Protection Agency’s (EPA) process for evaluating pesticide risks. Under current regulations, EPA requires chemical manufacturers to submit data only on singular active ingredients. Yet, pesticide products may be packaged or ‘tank mixed’ with other, equally toxic pesticides without any obligation to determine the toxicity of the material that is actually being applied. Independent research is left to fill in these gaps, and the data increasingly shows that toxicity with pesticide mixtures amounts to a roll of the dice: sometimes combinations are less toxic, sometimes their toxicities are merely additive. But more often than not, pesticide mixtures result in synergistic effects that make the product significantly more toxic than either individual chemical alone. To understand how pesticide combinations are harming pollinators, scientists began with baseline data on the individual toxicity range  that common pesticides pose to honey bee colonies. Research was conducted on honey bees reared in the Stoneville Wildlife Management Area […]

(Beyond Pesticides, February 1, 2023) A study published in Environment International concurs with previous reports that agricultural pesticide treatment can contaminate nearby residential areas, resulting in indoor chemical exposure via concentrations of insecticide active ingredients in house dust. Pesticide contamination in homes has ties to higher levels of pesticide residue in both human and pet bodies. Some pesticides, like organochlorine compounds, have poor elimination from the body, leading to accumulation over a lifetime. Pesticide exposure can heighten risks of various cancers (i.e., prostate, hepatic, liver, etc.), mental health problems (i.e., depression), respiratory illnesses (asthma), endocrine disruption, and many other pesticide-induced diseases. Extensive pesticide use can predispose human pathogenic to antibiotic resistance, bolstering bacterial virulence. Studies like this are concerning as it reveals that individuals do not have to be in close contact (e.g., chemical manufacturers, farmworker, gardener, custodian, etc.) with pesticides for risky, health-harming exposures to occur. Despite stricter regulations and technological changes beginning to decrease air pollution from cars and other vehicles, scientists are finding that the use of pesticides and other household chemicals represents an increasing proportion of U.S. smog-forming air pollution. Personal care products, cleaning agents, perfumes, paints, printing ink, and pesticides warrant greater attention from regulators for their ability to form toxic fumes that can eventually make their way […]

(Beyond Pesticides, December 8, 2022) Children with higher levels of certain pesticide metabolites are more likely to go through early puberty, according to research published recently in Environmental Pollution. The findings by a team of Spanish researchers speak to a need for greater protections for children from toxic pesticide exposure. Children are much more sensitive to pesticide exposure than adults as they take in greater amounts of toxics relative to their body weight and have developing organ systems. Managing homes and yards without chemicals and purchasing organic food whenever possible can significantly reduce childhood pesticide exposure.   Researchers began their investigation with children aged 7-11 participating in the Spanish state’s Environment and Childhood multicenter birth cohort stud, an ongoing project aimed at understanding the effect of environmental exposures on pregnancy, fetal, and childhood development in the country. Out of over 3,000 children enrolled in the project, 1,539 had their urine sampled for the presence of pesticide metabolites. Scientists focused on four insecticides breakdown products—a chlorpyrifos metabolite ‘TCPy’, a metabolite of the organochlorine diazinon ‘IMPy’, a general organophosphate metabolite ‘DETP’, the pyrethroid metabolite ‘3-PBA’, and a metabolite of ethylene-bis-dithiocarbamate fungicides ‘ETU’. Urinary levels of these pesticide metabolites were then compared against […]

(Beyond Pesticides, September 1, 2022) Low level exposure to synthetic pyrethroid insecticides at 6-8 months of age is associated with language development delays in two-year old toddlers, according to research published in Neurotoxicology this month. This is the latest study to link this class of chemicals to developmental delays in young children. Despite a steady drum of concerning research, the U.S. Environmental Protection Agency (EPA) in 2019 removed a crucial “safety factor” intended to protect children’s health from synthetic pyrethroids, allowing higher levels of the insecticides to be sprayed on food, in homes, and playing fields around the country.   To investigate the impact of synthetic pyrethroids on language development, scientists enrolled 327 expectant mothers in their third trimester. The mothers, all from rural areas of China, were selected if they had no history of significant pesticide exposure or family history of serious disease. Urine samples were taken from the women during pregnancy, and from infants 6-8 months after birth. Scientists analyzed samples for concentrations of three different synthetic pyrethroid breakdown products (metabolites), including 3-phenoxybenzoic acid (3PBA), 4-fluoro-3-phenoxybenzoic acid (4F3PBA), and cis-2,2dibromovinyl-2,2-dimethylcyclopropane-1-carboxylic acid (DBCA). While 3PBA is a metabolite of many synthetic pyrethroids, 4F3PBA a more specific metabolite of cypermethrin, […]

(Beyond Pesticides, February 4, 2022) In January, the U.S. Department of Agriculture (USDA) issued its 30th Pesticide Data Program (PDP) Annual Summary report (which evaluates each year the presence of pesticide residues on produce) and misleads the public on the safety of food and agricultural practices. This 2020 report concludes that more than 99% of the produce samples tested showed residues below established U.S. Environmental Protection Agency (EPA) benchmark levels. At first blush, this sounds very reassuring, but Beyond Pesticides maintains that there is (always) more to the “safety” story, not least of which are serious deficiencies in EPA’s establishment of those “tolerances.” Those flaws include a lack of risk assessment for vulnerable sub-populations, such as farmworkers, people with compromised health, children, and perhaps, cultural/ethnic and regional sub-groups of the general population, and a failure to fully assess serious health outcomes such as disruption of the endocrine system (which contributes to numerous serious diseases). For everyone, Beyond Pesticides recommends choosing organic produce whenever possible — the vast majority of which does not contain synthetic pesticide residues. The PDP report asserts that “the data . . . illustrate that residues found in agricultural products sampled are at levels that do not pose […]

(Beyond Pesticides, November 18, 2021) A study published by King George’s Medical University, India, finds exposure to xenobiotic substances like pesticides during pregnancy increases risks associated with preterm birth, including a rise in cesarean section (C-section) deliveries and a decrease in fetal body weight. Preterm births occur when a fetus is born early or before 37 weeks of complete gestation. Premature births can result in chronic (long-term) illnesses among infants from lack of proper organ development and even death. Birth and reproductive complications are increasingly common among individuals exposed to environmental toxicants, like pesticides. The Center for Disease Control (CDC) reports the preterm birth rate is increasing annually. Therefore, studies like this can help government and health officials safeguard human health by assessing adverse effects following prevalent chemical exposure. The study notes, “To the best of our knowledge, this was a pioneering study, and it may help to increase our knowledge with regard to xenobiotic exposure in biological systems and the need for stringent guidelines for agricultural use of pesticides.” The study examines the association between the transfer of xenobiotics (foreign synthetic substances like pesticides) from mother to fetus. Transferal of these toxic substances can result in biological and chemical changes (i.e., genotoxicity […]

(Beyond Pesticides, October 4, 2021) Recent findings of high levels of toxic pesticides in products permitted to be used as “minimum risk pesticides” (terminology used for essentially nontoxic) point to the need for greater oversight of these products and more severe penalties for violations. Pesticides classified as minimum risk are allowed under Section 25(b) of the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) [40 CFR 152.25(f)] to be used without going through EPA’s pesticide registration process. These products are limited to a specific list of ingredients, and all ingredients, including “inert” ingredients, are required to be listed on the label.  Minimum risk pesticides are used by organic growers, municipalities, and others who are not permitted to use, or choose to avoid, toxic chemicals.  Tell EPA and Congress to protect the integrity of minimum risk pesticides. Organic growers can lose their organic certification if they apply materials that are prohibited, which include the toxic ingredients glyphosate, bifenthrin, permethrin, cypermethrin, and carbaryl, found by the state of California in dangerous and misbranded Eco-MIGHT and W.O.W. (Whack Out Weeds!) products, falsely labeled as 25(b) minimum risk. Contamination of these products came to light in late July, when the California Department of Food and […]

(Beyond Pesticides, September 22, 2021) Health and environmental organizations are urging the U.S. Environmental Protection Agency (EPA) and state pesticide regulators to immediately stop the use and sale of dangerous and misbranded Eco-MIGHT and W.O.W. (Whack Out Weeds!) products, falsely labeled as 25(b) minimum risk. Recent laboratory testing by the state of California found the presence of hazardous pesticides, including glyphosate, bifenthrin, permethrin, cypermethrin, and carbaryl in these products. “From organic farmers to municipal landscapers and home gardeners, consumers employing minimum risk products are working intentionally to avoid the dangers associated with toxic pesticide exposure,” said Jay Feldman, executive director of Beyond Pesticides. “It is critical that EPA and state regulators coordinate to ensure the integrity of the minimum risk program.” Coordination is critical yet reports indicate that EPA is falling down on the job. The issue first came to light in late July, when the California Department of Food and Agriculture’s (CDFA) State Organic Program issued a Stop Use Notice to farmers alerting them to adultered Eco-MIGHT and W.O.W products. The products make a range of claims, marketed as “organic,” “natural,” “glyphosate-free,” and “non-toxic and safe.” As CDFA Secretary Karen Ross noted, “It is imperative that we alert California […]

(Beyond Pesticides, September 10, 2021) Research conducted in Thailand shows that exposures to pesticides, even at low levels, can impact the human endocrine system and distort thyroid function. The study looked specifically at interactions of genetics and environment: it investigated associations between variations in genes involved in pesticide metabolism and altered thyroid hormone concentrations in agricultural workers. This research underscores some of the complexity and difficulty of determining human vulnerability to impacts of pesticide exposures, given genetic variables. Beyond Pesticides believes that this very complexity is a cogent argument for anchoring regulation of pesticides in the Precautionary Principle. If exposure to a pesticide can cause damage to human (or environmental) health, it sometimes will do so. Thus, to protect people’s health, agriculture and other land management practices must transition from the use of synthetic pesticides to broad adoption of organic regenerative approaches that obviate the need for such chemicals. This research is part of a longitudinal study that seeks to evaluate sub-chronic impacts, on thyroid hormone levels, of repeated exposures to a variety of pesticides. The farmworkers studied in this phase comprise two groups: those working on organically managed farms (216 subjects), and those working on conventional farms that use pesticides […]

(Beyond Pesticides, January 7, 2021) Insecticides and road salts adversely interact to alter aquatic ecosystems, reducing organism abundance and size, according to a study in the journal Environmental Pollution. Pesticide use is ubiquitous, and contamination in rivers and streams is historically commonplace, containing at least one or more different chemicals. Although road salts can prevent hazardous ice formation during the colder months, the study raises critical issues regarding the adverse interaction between road salts and pervasive environmental pollutants that threaten human, animal, and environmental health and safety. Authors of the study note, “Our results highlight the importance of multiple-stressor research under natural conditions. As human activities continue to imperil freshwater systems, it is vital to move beyond single-stressor experiments that exclude potentially interactive effects of chemical contaminants.” To assess the impact of road salts and insecticides on aquatic communities, researchers created a mesocosm (controlled outdoor experimental area) to examines the natural environment under controlled conditions. These communities include zooplankton, phytoplankton, periphyton, and leopard frog (Rana pipiens) tadpoles. Researchers performed a toxicity evaluation of six insecticides from three chemical classes (neonicotinoids: thiamethoxam, imidacloprid; organophosphates: chlorpyrifos, malathion; pyrethroids: cypermethrin, permethrin). Additionally, researchers note the potentially interactive effects of these insecticides with three concentrations of […]

(Beyond Pesticides, September 10, 2020) A new analysis by Science of Cannabis Laboratories Inc. (SC Labs) finds detectable concentrations of pesticides and heavy metals in rolling papers, with hemp/blunt wraps and cellulose-based rolling papers containing the highest levels of contaminants. The analysis follows a SC Labs’ finding of high levels of chlorpyrifos—a neurotoxic, organophosphate insecticide—in the rolling paper of pre-rolled cannabis, which was undergoing compliance testing. Although the rolling paper regulations generally track standards for toxic tobacco products (which means there is very little meaningful regulation), the rolling paper use with cannabis may add an addition layer of scrutiny since some statewide cannabis regulations and independent certifications adhere to stricter guidelines similar to organic practices. Researchers note the goals of the experiment “were to assess the exposure risks to the consumer as well as identify any potential liabilities for cannabis producers who use these products to make their pre-roll products.” This report, and others like it, are significant as cannabis use expands in in the U.S. and around the world, and given that one of the most popular ways to consume cannabis product is as a rolled cigarette. Study author and president of SC Labs Josh Wurzer, Ph.D., said, “This [issue] is something that cannabis and paper […]

(Beyond Pesticides, July 9, 2020) Conventional U.S. milk contains growth hormones, antibiotics, and low to elevated levels of pesticides not found in organic milk, according to a study published in the journal of Public Health Nutrition by Emory University researchers. Milk can bioaccumulate certain organic pollutants, making it a valuable medium to assess what chemical we might be ingesting daily. With milk being one of the most consumed beverages in the U.S., in addition to its use in other popular drinks (i.e., coffee and tea), this study discloses widespread contamination and highlights the need for improved regulation. Researchers in the study note, “To our knowledge, the present study is the first study to compare levels of pesticide in the U.S. milk supply by production method (conventional vs. organic). It is also the first in a decade to measure antibiotic and hormone levels and compare them by milk production type.”  The market for conventional milk, produced in chemical-intensive agriculture, is declining, but the demand for organic milk is increasing due to concerns over chemical contamination in consumer products from pesticides and other toxic chemicals. Although the U.S. Environmental Protection Agency (EPA) sets limits for pesticide residues in food products, the agency […]

(Beyond Pesticides, June 7, 2019) Fruit orchards and vineyards endure some of the most intensive chemical management in all of agriculture. What has not been investigated — until now — is how pesticide drift from such agricultural sites may be affecting nearby public spaces. A recent, first-of-its-kind study out of northern Italy tested 71 public playgrounds near to apple orchards and vineyards in four valleys of the North Tyrol, and finds that 45% are contaminated with a single pesticide, and 24% by more than one. Study authors note that the playground contamination will likely grow worse over the course of the growing season. This would likely amplify the impacts of such chemical trespass on nearby public spaces, never mind the varieties of harm to the sites themselves and the food produced on them. Organic agriculture, of course, remedies all these concerns. The study randomly chose 71 public playgrounds in the four South Tyrolean regions, and analyzed grass samples for potential contamination by 315 different pesticides. Because pesticides applied to agricultural fields, orchards, and vineyards are easily volatized, carried aloft by wind, and/or washed by rain off of the target site, the study also evaluated the impacts of those (and other) factors […]

(Beyond Pesticides, May 16, 2018) Northern Harvest Sea Farms, an ocean-based fish farm in New Brunswick, Canada, was appeared in court yesterday to answer legal charges stemming from the off-label use of an unnamed pesticide added to its operations to combat severe sea lice outbreaks. The company holds nine licenses for farmed Atlantic salmon cages on the Bay of Fundy, as well as for fish farms off the Newfoundland coast. Sea lice outbreaks are a common at over-crowded, ocean-based fish farms because such facilities afford the optimum conditions for rapidly reproducing and spreading lice. In response, some companies have turned to using illegal and off-label pesticide applications to stave off the problem, which causes huge farmed salmon kills. The company was issued a $12,000 fine that was challenged as inadequate by the Grand Manan Fishermen’s Association. Bonnie Morse, project manager for the association told Canadian Broadcasting Corporation (CBC) news, “I think any time there’s a fine that’s a deterrent to illegal activity, it should be an actual deterrent to the activity,” said Morse. “When you’re looking at $1.5 million worth of fish, their actions speak for themselves.” Maria Recchia, the executive director of the Fundy North Fishermen’s Association, questioned the allowance of fish […]

(Beyond Pesticides, July 7, 2017) The active ingredients in commonly used bug sprays such as RAID leave significant residues that persist for over a year in the home, according to a study published by Brazilian researchers in the journal Environmental Toxicology and Chemistry. The pesticides tested, synthetic pyrethroids, have been linked to a range of health effects, most notably in children. The results of this study add to calls for homeowners to rethink a chemical-based approach to home pest control, in favor of simple, non-toxic practices. In the recent study, researchers compared the breakdown time of two synthetic pyrethroids, cypermethrin and beta-cyfluthrin, between laboratory conditions and those in an average home. Under lab conditions, with temperature controlled and without sunlight or ventilation, both active ingredients broke down little within the 112 day test period observed. However, the test house, where insecticides were applied according to indoor label conditions, displayed breakdown times similar to the lab results during the first 112 days. Researchers continued their observation of pyrethroids in the home for up to a year, finding after that period 44% of beta-cyfluthrin and 70% cypermethrin remained in household dust samples from the singular, original application. A 2014 study published by […]