I've also heard bad things about Hartz. I did use Hartz for a short time 2 or 3 years ago because it was so much cheaper. I wouldn't use it now.
I use Advantage and Interceptor as that is what my vet recommends.
I also find that I don't need to treat Jasmine for fleas every month. I just keep a close watch, and if I see no signs of fleas, I don't use it. It's now been over 2 months since her last treatment, and still no signs of any fleas, and I live in Florida where fleas are very bad in the summer.
I use Advantage and Interceptor as that is what my vet recommends.
I also find that I don't need to treat Jasmine for fleas every month. I just keep a close watch, and if I see no signs of fleas, I don't use it. It's now been over 2 months since her last treatment, and still no signs of any fleas, and I live in Florida where fleas are very bad in the summer.