Just bathe your cats.
Despite the $35 Frontline, I keep spotting fleas on my kitties. So before I gave them their next treatment, I decided I'd bathe the kitties and go over them with the flea comb.
Elliot: Was better than expected, even tolerating the post-bath blowdryer, but turned into a big, shivering pile of cat. He laid on his side when I put him there, stayed on his other side when I flipped him, and even seemed to cooperate when I was combing his little legs for fleas. After, I brought him into my bedroom. As I turned to leave the room, I turned around and said, "Hey, Elliot!" as I often do. He jumped off the bed and scooted under it. Hmpf.
Kitten: I was expecting to get some type of permanent scar from bathing Kitten, but she handled it surprisingly well too. She was scared of the water, but dealt with it, and also cooperated with the blow-drying. (Fluffy wanted NOTHING to do with the blowdryer and would have taken off my arm had I not let him go.) After the bath, I stood up with her and held her to my chest as I reached for the towel. She was clinging to me like a scared child would. Ahh, the guilt!
But now they both look beautiful and smell like baby soap and now have at least a few less fleas. Actually, the problem was much better than I had thought it would be; my Thanksgiving kitten was covered in fleas, so combing him down after the bath was pretty gruesome, but I only found a total of four or so fleas on both of my cats.
And both cats were sleeping with me this morning when I woke up, so I guess they don't hold a grudge. :)