Originally Posted by newB

One of reasons cats are so awesome: All you have to do is show them the litter box one time, and then they know that's where to go. "Accidents" are usually their way of showing their displeasure - either with you, or that they aren't feeling well.

We had a cat you would have loved: She was indoor/outdoor and although she would be outside she would come to the door and cry just to be let in to use the box, and then would want to go back out.