“last time I bought this product I was skeptical for the $50 price never tried it before I have an American bulldog who's very healthy he's a one-year-old puppy he weighs almost a hundred pounds he took this chewable with no problem in August of 2018 and up till this point right now am I needing to replace it he has had no fleas and it is only supposed to work for 3 months best flea product ever. Keeping in mind he goes to the dog park he goes on to walk today and goes outside in the yard so he goes lots of places”