I've used Frontline Plus on my corgi (yup, I have one in real life) and my cats for a couple of years now with great success. One dose kept the fleas at bay for the advertised month. But since October or so it doesn't seem to be doing the trick anymore. My dog gets infested, we give him a flea bath with some really good shampoo that kills them all, we let him build up his oils for a couple of days, and reapply the Frontline. Two weeks later the fleas are back. Same with the kitties. We've had the house bombed and vacuum like crazy, and fleas aren't hopping on us, so I don't think the house is infested. I'm convinced it's the Frontline. Going to try Comfortis pills.
Just curious if anyone else has had less than wonderful results from Frontline Plus lately. Fleas are notorious for developing immunity to things that kill them. It might not be worth buying it at $15 a dose anymore.