Are all fleas the same?

Fleas and ticks are definitely the scourge of the south! I live in Georgia, and some of the vet prescribed flea/tick meds have quit working (Frontline Plus and Frontline Tritak). The monthly chewable, NexGard, works well, but is insanely expensive. I decided to try the Sorresto Flea/Tick Collar when they went on sale at PetSmart, and so far, so good! If they don't get wet, they will last up to eight months. I take it off whenever I bathe the dogs, and they don't stay outside long enough in the rain to worry about it.

I will have to ask my vet about Bravecto.