Treat the house and treat the yard... no matter what flea preventitives you put on, they won't work properly until the environment is treated. We sale a pill called "Capstar" which kills all the fleas on the animal within the first 30 minutes. After giving the cat a capstar you can then apply a flea product such as Frontline, Advantage or Revolution.
You can get a flea spray for the house called Mycodex Environmental control. It works amazingly well and is safe for bedding and carpet.
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"Though we're strangers till now
We're choosing the path between the stars
I'll leave my love between the stars"
-'As the World Falls Down' Labyrinth