A flea comb is a tiny, very narrow toothed comb that can be picked up almost at any pet store for a resonable price. Any pet store (Petco, Super petz, PetSmart, or Wal-mart employee will be able to show you where to find them. They're relatively cheap and work wonders! (about $3 -$5.) What you do when you get the flea comb is fill a bowl up with very hot, soapy water (dish soap works best) and run the comb down the kitty's fur. Each time you run the comb over the cat, you must place it in the soapy water afterwards to get the dead fleas and feces off the comb so as not to spread it throughout the kitty's fur. The soapy water will kill the fleas and prevent them from escaping into your house. You have to make sure you comb every possible part of the kitty.It sounds tedious, but it really goes relatively fast if you can keep the kitty calm while you groom him with the flea comb. be sure to go over every inch of the cat including it's privates, behind and above it's ears, it's hindlegs and under it's chin. After you flea comb the kitty, then bath it to get rid of the soap residue, normal cat shampoo should be fine since you've already given it a flea bath. Then after the kitty is dry i would go to the vet and buy some Feline Frontline or Feline Advantage to put on them ( the cheaper brands do not work well and can cause more harm than good, so it's worth the investment). Be sure the cat does not get wet up to 3 days after you put the flea treatment on the nape of their necks. After that, they should be good and flea free! Good luck!