Brenda, I do a combination of things: I use Advantix, and like Frontline, you need some additional help. My vet says that it doesn't kill the fleas; instead it neuters them. I also found that in years when I religiously bathed Lulu, I had more fleas, which told me that the Frontline/Advantix was being washed off. In addition to the Advantix, I keep a box of Capstar around. Capstar is a pill that when taken causes the fleas to drop dead for 24 hours. It's okay to give it to your dog in consecutive days, but it would be expensive. The other things I do: flea shampoo, keep Lulu's coat short in summer months, and avoid high dog traffic areas, like the park, where she might pick up fleas. Doing all of this helps us MANAGE the flea problem, but it doesn't eliminate them completely.
If you get any other good tips, please share. Good luck.
Jennifer and Lulu, who's going to be 8 in August