MIAMI (Legal Newsline) – The makers of Seresto flea and tick collars face a class action lawsuit that says approximately 1,700 pets have died as a result of using them.

Regina Bullard and lawyers at three firms – Milberg Coleman, Reese LLP and Williams Dirks Dameron – sued Bayer Healthcare and Elanco Animal Health on Sept. 13 in Florida federal court. The case comes two months after a Congressional subcommittee hearing on consumer complaints.

The companies have not issued a recall and have continued to market the collars as safe, though the complaint notes Canada has banned their sale.