I have also heard that Frontline has not been working on dogs because the fleas have been building an immunity to it. We were recomended Advantix II from our Vet you can get it at the pet store and you get one more application than Frontline for the same price. It has worked great for our Pups (we had a flea problem about a month ago with Kiwi, put it on him and within the 12 hour period they were all dead! Have not seen any since!) Lola got her second application yesterday (We have officially had her for one month!) And she rolls around in the backyard all the time! She is doing great with it, doesn't have any harsh smells or anything, Love it!
