Now you can have your cat saying "I'm thankful for my Spa" for next Thanksgiving.
When introduced to the Cat Spa, most cats react immediately approaching it, rubbing or rolling on it, or biting on the gum stimulator. You'll be amazed!
http://www.amazon.com/Hagen-Living-World-Cat-Spa/dp/B000MNGANQ/ - via Inventor Spot
more likely, unfortunately, is that your cat wont touch it.
I don't blame her.
As for it getting gunked up, I just hit it with the vacuum if I happen to be cleaning. Looks brand new.
http://youtube.com/watch?v=AAG2nAfvwiw