Pet owners across the U.S. are reeling from a recent report by USA Today revealing that Seresto flea collars, developed by Bayer and sold by Elanco, have been linked to nearly 1,700 pet deaths linked to flea collars and tens of thousands of additional incidents involving harm to both animals and humans.
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Despite these alarming numbers, the Environmental Protection Agency (EPA), which oversees pesticide regulation, has yet to issue a public alert about the risks associated with these collars. Advocates for animal welfare, including Beyond Pesticides, are calling on the agency to take immediate action to protect pets and their families.
A Growing Crisis: Alarming Numbers from Flea Collars
According to data from the EPA’s Office of Pesticide Programs Incident Report database, Seresto flea collars have been linked to:
- 1,698 pet deaths linked to flea collars
- Nearly 1,000 human incidents
- Over 75,000 total reported cases of harm, including seizures, rashes, and neurological symptoms in pets.
The collars are designed to release pesticides onto pets’ fur to kill fleas and ticks over several months. However, active ingredients like imidacloprid and flumethrin—both powerful insecticides—have been implicated in causing adverse effects. Despite this, the collars remain widely available through major retailers, including Amazon, Chewy, and PetSmart.
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What Makes Seresto Collars Dangerous?
The Role of Imidacloprid and Flumethrin
Imidacloprid, a neonicotinoid insecticide, is associated with severe environmental and health concerns. Commonly linked to declining bee populations, it is also a neurotoxicant, endocrine disruptor, and immunosuppressant. In humans and animals, exposure can lead to neurological issues and long-term health risks.
Flumethrin, another active ingredient, belongs to the pyrethroid class of synthetic insecticides. While these compounds are generally tolerated in mammals, chronic exposure can lead to seizures, motor dysfunction, and gastrointestinal distress. Alarmingly, flumethrin has been linked to learning disabilities in children, raising concerns about household exposure when these collars are used on pets.
Synergistic Effects and Inert Ingredients
The combination of imidacloprid and flumethrin is believed to create a synergistic effect, amplifying the toxic impact on pets. Additionally, “inert” ingredients, often omitted from public disclosures, may also contribute to the harm caused by these collars. A 2012 Bayer study acknowledged this synergy but focused on its effectiveness against fleas rather than its potential risks to pets.
EPA’s Inaction and Public Outrage
Despite the mounting evidence, the EPA has yet to act decisively. The agency has logged incident reports for years but continues to permit the sale of Seresto collars. In a statement, the EPA insisted that the collars are “eligible for continued registration” based on current data but advised pet owners to follow label precautions, such as keeping collars away from children for at least a day after application.
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Karen McCormack, a retired EPA scientist, criticized the agency’s lack of action, calling it “bordering on criminal.” She emphasized the sheer volume of reports: “The EPA appears to be turning a blind eye to this problem. After seven years of increasing incidents, they are still telling the public they are monitoring the situation.”
The Human Impact
The risks of these collars extend beyond pets. Among the 907 human incidents reported:
- 19 were severe, involving symptoms like rashes, hives, and neurological effects.
- Children, who are particularly vulnerable, face risks from incidental exposure, such as licking, hugging, or playing with pets wearing the collars.
The EPA’s failure to evaluate the combined effects of imidacloprid and flumethrin highlights broader issues in pesticide regulation. Nathan Donley, Ph.D., of the Center for Biological Diversity, described the situation as “a fundamental problem with the process,” noting that the EPA has not adequately warned the public despite overwhelming evidence of harm.
Alternatives to Flea Collars
While Seresto collars remain on the market, pet owners can take proactive steps to protect their animals without resorting to toxic products. Veterinarians and advocacy groups like Beyond Pesticides and the Natural Resources Defense Council (NRDC) recommend the following:
Nontoxic Flea Control Methods
- Frequent Grooming and Bathing: Regularly combing and washing pets can help control fleas without chemicals.
- Environmental Management: Vacuum frequently and wash bedding to remove fleas and eggs from your home.
- Diatomaceous Earth: This natural powder can be applied to pet bedding and carpets to kill fleas mechanically rather than chemically.
- Essential Oils: While some essential oils are toxic to pets, carefully formulated sprays containing safe oils like cedarwood or lemongrass can deter fleas.
Healthier Alternatives to Collars
For those seeking collar-like solutions, consider products made with natural repellents or consult with a veterinarian for recommendations tailored to your pet’s needs.
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The Call for Accountability
Animal welfare advocates are demanding immediate action from the EPA. Jay Feldman, executive director of Beyond Pesticides, compared the current crisis to the agency’s swift action against the herbicide Imprelis in 2011, when trees were dying in large numbers. “The deaths linked to flea collars of nearly 1,700 pets should trigger immediate action,” he said. “EPA has the authority to act now and should use its powers to protect the health and lives of pets.”
Retailers and Consumer Responsibility
Retailers continue to sell Seresto collars despite complaints and documented incidents. Consumer awareness is key:
- Report Incidents: If your pet experiences adverse effects, report them to the EPA and the manufacturer.
- Spread Awareness: Share information with other pet owners about the potential dangers of these collars.
- Choose Wisely: Opt for safer alternatives to protect your pets and family members.
A Need for Change
The controversy surrounding Seresto flea collars underscores the urgent need for stronger regulatory oversight. Beyond Pesticides and other organizations argue that the EPA must prioritize the health of pets and families over corporate interests. Until then, pet owners bear the responsibility of making informed decisions to safeguard their beloved animals.
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As Ron Packard, a pet owner who lost dogs to these collars, stated, “If I can save a few pets, I can deal with the pain of losing mine.” His words echo the collective hope of advocates and pet owners: that no more lives, human or animal, are harmed by preventable pesticide exposure.
