Since the collar was sold beginning in 2012, the U.S. Environmental Protection Agency has received more than 75,000 incident reports about pet and human harm linked to use of the collar.

Seresto, one of the most popular flea and tick collars in the country, has been linked to hundreds of pet deaths, tens of thousands of injured animals and hundreds of harmed humans, U.S ...

They don’t see the collar as something to be prescribed by a doctor, and they have yet to actually test how well it can actually reflect a human’s behavior while attached to a dog’s scruff.