I live in Florida. Certain times of the year the fleas here are horrible. I have tried every flea pill, topical and all natural products. Sadly to say the flea's won. They worked at first. I first bought this at a feed store out of town for the price I was unsure. This is my second can and I love it my dog's love it. There skin.has cleared up. Once you spray it on you instantly see the flea's falling off dead. It was unbelievable!!!! I highly recommend if you have tried almost everything out there. My fur babies were suffering really bad. Their coats are beautiful and they are not scratching all day.