Midwest Center for Investigative Reporting.
The collar has also been tied to tens of thousands of injured animals, as well as hundreds of harmed humans. It was named in approximately 75,000 incident reports with the
Environmental Protection Agency (EPA).
Reports about the Seresto collars started coming in in 2012 just after the collars were first approved for sale. In most of the incidents, pets had allergic reactions in the spot where the collar touched their fur or skin. Some animals had seizures. In severe cases, owners lost their pets just weeks after fitting them with the collar.
Meanwhile, in the over 900 incidents that involved humans, rashes were the most commonly reported effect of exposure to the collar. In one particularly severe case, a 12-year-old boy was hospitalized with seizures and vomiting after sleeping beside his dog. The dog had been wearing a Seresto collar.