There are many horror stories associated with using "off brand" flea products. Hartz has been around so long and it is one of the worst offenders.
We have been using Frontline spray and have used it every two weeks instead of monthly as the product says to do. The vet said to go with the every other week. I think that the Flea is the state animal for Florida and we have many of them. The weather doesn't get cold enough here to kill them all out in the winter time, so I've seen some that must be grandfathers.
We did have a tick problem last summer, and the groomer found one tick on Sasha a few weeks ago. So we will continue with the Frontline. And Wallis is being treated now for a disease that is caused by ticks.
Monica - I'll see if Bub still has the website at his office. He bought Capstar online much cheaper than that. We bought the size that Wallis gets one pill and the other two girls half one between them. That stuff really works!
RIP Wallis, John Robert, Tibby & Pip
Mom to JoJo, Roxie & Linguini (Cavaliers)
and my birds Moji (Senegal) and Walter (Blue Front Amazon)