I have been using this product for over 18 months now, and find it much better than frontline. would recommend for dogs & Cats.
use fibrospot a lot highly recommended and the price is fantastic
We tried this after Frontline didn't work. (Friends told me after that his vet had told him Frontline is becoming less effective). I didn't see that this is basically the same product, so... it worked for 2 weeks, possibly because it boosted the original dose, but now we are finding fleas re-appearing on all the dogs. The whole house was treated at the same time with a different product to kill off eggs and larvae. Dog beds are washed daily.