A popular flea collar brand could be linked to more than 1,700 pet deaths – and some are calling for a recall. According to government documents, Seresto collars have been linked to more than 75,000 reported incidents since 2012, including 1,700 deaths. Retailer Elanco says the collars are safe and that there is “no established link” between the two pesticides used in Seresto collars and pet deaths. The company says it will not issue a recall but is cooperating with investigators. Should Seresto collars be recalled? Has your pet ever had a bad reaction to a product?