Jessy Edwards , Jon Styf  |  January 31, 2024

Category: Legal News

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Portrait of a dog in yellow anti-flea dog collar, representing the Seresto flea and tick collars litigation.
(Photo Credit: Volga/Shutterstock)

Update:

  • A federal judge in Illinois gave initial approval to a $15 million settlement that resolves claims that Bayer did not properly warn customers of the risks related to Seresto flea and tick collars, Law360 reports.
  • Plaintiffs in the multidistrict litigation claim pets who wore Seresto collars experienced serious side effects, including vomiting, lethargy, anorexia, behavioral disorders and death.
  • Bayer sold more than $300 million worth of Seresto collars in 2019 before selling the brand to Elanco in 2020, Law360 reports case filings show.

Seresto flea and tick collars class action lawsuit:

  • Who: A dog owner sued Bayer over its Seresto flea and tick collars.
  • Why: The plaintiff says the collars are dangerous to pets and humans because they killed her dog.
  • Where: The Seresto lawsuit was filed in a Florida federal court.

(Sept. 23, 2022)

Bayer continues to market that its Seresto flea and tick collars are safe for pets even after tens of thousands of pet injuries and more than a thousand deaths, a new class action lawsuit alleges.

Plaintiff Rhoda Trotter filed the class action lawsuit against Bayer Healthcare LLC, Bayer Corp. and Elanco Animal Health Inc. on Sept. 21 in a Florida federal court, alleging violations of state and federal consumer laws.

Seresto flea and tick collars — some of the top-selling flea and tick preventative collars in the country — have been associated with tens of thousands of pet injuries and approximately 1,700 pet deaths,” the Seresto class action states. “Defendants… hid that information from, and patently misled, consumers. Indeed, even after reports of Seresto’s serious side effects became public, Defendants have downplayed the reports and continued to represent that Seresto is safe for pets to use when it is not.”

Trotter says she used the collar on her own dog, Taz, who became lethargic and died soon after.

Seresto class action claims dangers of flea and tick collars well documented, lawsuit states

In June, a congressional subcommittee released a report recommending Seresto flea and tick collars be removed from the marketplace following an investigation into its harms, the lawsuit explains. 

Seresto’s danger stems from its unique combination of imidacloprid and flumethrin, two dangerous pesticides that, together, magnify their harmful effects, the Seresto class action states.

Canada has already banned the sale of the Seresto collar within its borders. However, at no point have the defendants disclosed this information to United States consumers, the lawsuit alleges.

“To the contrary, they have maintained and represented that Seresto collars are safe for pets to use,” the Seresto class action claims. “Despite Defendants’ claims, Seresto collars have resulted in millions of dollars in damages for pet owners — both in the form of collars that they overpaid for or would have never purchased had consumers known of Seresto’s dangers and also in veterinarian and other medical expenses incurred by pet owners with pets injured by the Seresto collar and its pesticides.”

Trotter looks to represent anyone in the United States who used a Seresto collar on their pet plus a Florida subclass.

She sued under state consumer laws and for breach of warranty and negligence and seeks certification of the class action lawsuit, damages, fees, costs and a jury trial. 

Have you used a Seresto flea and tick collar on your pet? Let us know your experience in the comments! 

The plaintiff is represented by Rachel Soffin of Milberg Coleman Bryson Phillips Grossman PLLC and Michael Reese of Reese LLP and Michael Williams of Williams Dirks Dameron LLC.

The Bayer Seresto class action lawsuit is Rhoda Trotter v. Bayer Healthcare LLC, et al., Case No. 8:22-cv-02183-CEH-MRM, in the U.S. District Court for the Middle District of Florida.


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517 thoughts onJudge gives initial approval to $15M Seresto settlement

  1. Gina Rizzo says:

    I used it on my cat for 7 months a couple years ago. Didn’t see any problems but add me.

  2. Barbara L. Rogers says:

    Please add me

  3. Roxanne Matthew says:

    I used Seresto on my cats and they lost their hair around their neck within a couple days!

  4. Jenn says:

    Please add me

  5. Jacqulyn McGlynn says:

    Please add me to this suit

  6. Larry D Harmon says:

    I purchased these Soresto collars for my 2 dogs in 2022. within 3 weeks, my Border Collie started having seizures. She ended up having them every 4 to 5 weeks, and they were very scary. She was very healthy and was about 8 years old before I used the collars. Took her to the vet and after she had about 8 seizures, I came across an article about the Soresto collars causing seizures. I immediately removed the collars from both dogs (my other dog did not seem to have any issues). My vet had to medicate our Border Collie to minimize her seizures. The seizures have stopped, but she has gone through heart failure, recurring vomiting of bile and phlegm. She is unsteady on her feet and is unable to sleep well. I feel so bad that I didn’t know about the harmful effects of these collars with the neurotoxins they contain. She is now on 4 medications that are trying to help her live a comfortable life. This is not right and these collars are DANGEROUS to our loving pets. Our vet bills just keep piling up, and we are heartbroken. Please take these killers off the market as Canada has done.

  7. ANN MARIE DESANTO says:

    i have NO ISSUES with my cats using Seresto. there are fake ones out there that give pets side affects.

    1. Sandra Perry says:

      We have no issues either unless it’s long term. I sure hope.not my cats have had seresto on them for 3 years now. I’m really concerned.

  8. Dee Rogers says:

    I used the Soresto collar for two years in a row on my young cat. No problems the first year but had numerous problems the 2nd year right away. She had problems swallowing, stopped eating and lost weight. I took her to several vetinarians who did bloodwork and exams but they didn’t know what was wrong with her. My cat just kept on having terrible symptoms over a period of 4 months until finally she was unable to walk – she kept falling over. I finally took her to an Emergency Vet that same day. The Vet said my cat was showing severe neurological symtoms and she didn’t know if she would live much longer. I made a heartbreaking decision to put her down, and she was only 2 and 1/2 years old. I spent a lot of money on Vet bills. Medications, food supplements and the cost of euthanizing her. It has been a few years since she’s been gone and I miss her terribly.

  9. Hilda Holliday says:

    I put one on my German Shepherd 2 years ago and he got lethargic and wasn’t hardly moving after him having it on for about 4 hours and I quickly took it off of him and called Seresto and they said it wasn’t anything to do with the collar!! They lied to me and good thing I took it off of him as soon as I did otherwise I would’ve lost him!!

  10. Mary McCloskey says:

    I have used them for years. I will take them off now to see if my cats improve. Please add me.

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