Flumethrin (FMT), an acaricide extensively employed for the control of Varroa destructor, and hexaconazole (HEX), a triazole-class fungicide, are freq…

A study finds that the cumulative impact of a pyrethroid insecticide and a fungicide hexaconazole "induced [an] acute synergistic effect" in honey bees.

(Beyond Pesticides, July 20, 2023) Despite evidence of toxicity to pets from Seresto pet collars (manufactured with the neurotoxic insecticide flumethrin, as well as the notorious neonicotinoid imidac...

A study finds that the cumulative impact of a pyrethroid insecticide and a fungicide hexaconazole "induced [an] acute synergistic effect" in honey bees.

The brown dog tick, Rhipicephalus sanguineus sensu lato (s.l.), is an important ectoparasite with medical and veterinary significance worldwide. Control mainly relies on acaricides, which can contribute to the development of resistant tick populations. This study aimed to evaluate the susceptibility levels of R. sanguineus s.l. collected from different regions across Mexico, to the acaricides coumaphos, fipronil, flumethrin, and amitraz. Engorged ticks were collected from naturally infested dogs...

Effective control of the cat flea (Ctenocephalides felis) infestation is essential for human and animal health. To date, several ectoparasitic drugs, such as carbamates, neonicotinoids, phenylpyrazoles, and pyrethroids have been used to control flea infestations; however their widespread use has led to resistance, hampering treatment success. In this study, the resistance potential of C. felis collected from cats to fipronil (FIP), imidacloprid (IMI), flumethrin (FLU), and propoxur (PRO), which...

An EPA OIG report reveals multiple systemic failures by the agency, citing inadequate safety reviews of Seresto flea collars.

(Beyond Pesticides, July 20, 2023) Despite evidence of toxicity to pets from Seresto pet collars (manufactured with the neurotoxic insecticide flumethrin, as well as the notorious neonicotinoid imidacloprid), the U.S. Environmental Protection Agency’s (EPA) has announced that the popular flea and tick collars will remain on the market, but with new mitigation measures. However, advocates say that these measures will do little to protect people and pets from chemical exposure using these collars. The agency will require Elanco — the manufacturer of Seresto — to conduct enhanced reporting for various factors, including adverse symptoms, veterinary community outreach, and warnings on the product’s label. Seresto, developed by Bayer and sold by Elanco, has been linked to nearly 1,700 pet deaths, injuries to tens of thousands of animals, and harm to hundreds of people. There are nontoxic ways to protect pets from fleas and other pests while protecting human family members. Children Ignored by the Agency EPA has a history of ignoring the exposure patterns to children who come into close contact with pets and their flea collars and the potential adverse health threats, opting for warnings instead of regulatory action. In 2017, EPA issued a warning for tetrachlorvinphos (TCVP) flea collars that advised: “not […]

Flumethrin has been widely used as an acaricide for the c...