Bests & Worsts Reviews from Amazon

I put this collar on my 14-month old cat. About 10 days later, he died. He had no other apparent issues. He was an outdoor cat that spent most of his short life hanging out on our deck. He was acquired to deter squirrels and other critters from coming into our garden, which he was quite successful at. Fleas started showing up on our clothing when on the deck this past summer, so I looked for the best flea collar I could find for my little garden guardian here - and the Soresto seemed like the best. In his last 24 hours, he just wanted to be in the garage and he didn't eat much of his food. He was meowing a bit more than usual and acted exhausted. This wasn't unusual for a 90-degree summer day. The next morning, I went out to the garage to run some errands and he was on the door mat - not moving with his mouth open. He was gone. I cannot prove Seresto killed my cat. But he was happy, healthy and strong prior to his death and the only variable is this collar. Having read the toxicity concerns of other owners, I'm convinced the collar poisoned my cat to death.