Seresto Flea and Tick Collars: Examining Why a Product Linked to More than 2,500 Pet Deaths Remains on the Market

Meeting Notes: 
The hearing will convene in room 2154 of the Rayburn House Office Building and over Zoom, which has been approved by the House.
Wednesday, June 15, 2022 - 1:30pm
2154 Rayburn House Office Building, Washington, DC 20515

Chairman Raja Krishnamoorthi's Opening Statement [PDF]

On Wednesday, June 15, 2022 at 1:30 p.m. ET, Rep. Raja Krishnamoorthi, Chairman of the Subcommittee on Economic and Consumer Policy, will hold a hearing to examine the findings of the Subcommittee’s report entitled “Seresto Flea and Tick Collars:  Examining Why a Product Linked to More than 2,500 Pet Deaths Remains on the Market,” revealing that the Environmental Protection Agency (EPA) knew of the dangers associated with the Seresto flea and tick collar for several years, but failed to take action to protect pets and their owners.

The Seresto flea and tick collar received EPA approval in 2012 and was introduced to the market in 2013.  Since then, Bayer—the original brand owner of the collar—and Elanco—which purchased the product in 2020—have sold nearly 34 million collars.  Pet owners embraced the convenience of the product, which provides 8 months of flea and tick protection for dogs and cats for under $70, and which is widely sold by pet specialty stores, online pet pharmacies, and large online retailers.


The Subcommittee launched its investigation into the collars in March 2021, following the publication of an investigative report which revealed that, as of June 2020, there had been more than 75,000 incidents and approximately 1,700 pet deaths linked to the Seresto collar.  Since then, the reported numbers have increased to more than 98,000 incidents and 2,500 pet deaths.

The hearing will examine the EPA’s failure to regulate the Seresto collar as well as Elanco’s refusal to take action to protect pets and their owners from the collar’s harm.


Panel I

Faye Hemsley & Omarion Hemsley
Owners of Deceased Pet

Thomas Maiorino
Owner of Deceased Pet

Panel II

Jeffrey Simmons

President and Chief Executive Officer

Elanco Animal Health Incorporated


Nathan Donley, Ph.D

Environmental Health Science Director

Center for Biological Diversity


Karen McCormack

Former Scientist, Policy Analyst, and Communications Officer (ret.)

Office of Pesticide Programs, Environmental Protection Agency


*Carrie Sheffield (minority witness)

Senior Policy Analyst

Independent Women’s Voice


117th Congress