The owner cleans the litterbox with too harsh a cleaning product.
The location of the litterbox is too busy or not private enough for the cat.
The home is too large for just one litterbox.
The cat inadvertently gets locked out of reach of the litterbox.
The cat is kept from using the litterbox by another animal in the house.
There are too many cats and not enough litterboxes.
There are too many cats and not enough territory.
Stray cats can be seen/smelled near the cat?s territory.
The unneutered male cat has come of age and is marking his territory.
The unspayed female is in heat and advertising for suitors.
Over time, the cat has developed an aversion to the texture of the litter.
The cat was never properly trained to use the litterbox in the first place.
The cat is stressed by a change in routine or environment, including a new baby, new furniture, work schedule changes, vacations, overnight guests or a move.

Feline Events
5/16/09 SP Garage Sale and food
5/22/09 OARS Garage Sale
5/27/09 OARS Chickenfest
5/29-5/31 OARS Garage Sale
6/6/09 Bark in the Park FVHA
6/13/09 SP Parade
9/12/09 OARS Shelter Trek
Fun Facts!
The cat's front paw has 5 toes, but the back paws have 4. Some cats are born with as many as 7 front toes and extra back toes (polydactl).The domestic cat is the only species able to hold its tail vertically while walking. You can also learn about your cat's present state of mind by observing the posture of his tail.If a cat is frightened, the hair stands up fairly evenly all over the body; when the cat threatens or is ready to attack, the hair stands up only in a narrow band along the spine and tail.
Countertop Jumping

This problem can be solved with some simple aversion techniques.NEVER leave enticing bits of food on the counter, especially when you are gone from home.
Use only remote corrections to keep cat off countertops. If you use a squirt bottle with water you will teach your cat to go up there when you are away.
Remote corrections that effectively discourage countertop prowling are:
Overlapping cookie sheets or long pieces of cardboard along the edge of the counter where the cat jumps. (This makes the surface seem unstable and not a good place to jump up.) You can place empty soda cans on the cookie sheets to make noise when falling off the counter top.
Place a mini-motion detector (available at Radio Shack) on the countertop when leaving home for the day. Something that will make an un-pleasant noise
Take a plastic carpet runner and turn the pointy side up, so when you cat jumps up it will be un-comfortable.
If all else fails, you can try a Scat Mat. You put these Mat?s on the counter and when your cat jumps up it receives a static electricity like shock.