We just had a thread
about a cat being poisoned by OTC flea products like Zodiac...
No, don't wash your cat in that poison.
If the Frontline isn't working, consult your vet. However, frontline is one of the topicals that takes a little longer to work than some of the other topicals do. It can take 2-4 days for you to see much difference.
If it's not working, your vet can give you capstar to help get you through the time till it's safe to use another dose of frontline or another topical. Ask your vet about topicals for your area, too. In some areas fleas are getting resistant to Frontline and Advantage or Revolution may be needed.
You also need to clean your home. You're going to still see live fleas if they haven't been on the cat, yet.