Get a Dog?
seriously though, cats hate water, if you could spray it with a hose, shoot it with a water gun a few times he/she will probably stay away, though this prolly wouldn't be great for your felt.
or, from
cats.about.com:
Experiment with these:
* Citrus
Cats generally hate the scent of citrus. Try spraying a citrus-scented room freshener around your cat's favorite "scratching-chair," or coarsely chop citrus peel and sprinkle it just under the perimeter of the chair. It can also be used in the soil around potted plants if your cat tends to make salad from them.
* Red Pepper Spray
Never spray this on your cat. However, if kitty is using your flower bed for an outdoor litter box, you can spray the soil around the plants. Chances are, he'll avoid that area in the future.
* Bitter Apple
Doesn't the name alone make your mouth pucker? It's said to be a great deterrant to plant chewing.
* Aluminum foil, plastic carpet protectors
Cats avoid either the sound or the feeling of these on their feet. Strategically placed, they can discourage kitty from trespassing where he is not allowed. (The carpet protector is placed upside-down so the knobby area is on top.)
* Commercial Preparations
Many of these are more suitable for outdoors, and should be tested in an inconspicuous place before using in the house. You may find the odor objectionable in some of these