Question about my cats

Question
I have 2 American Bobtail cats. I love them to death. They are both 1 1/2 old and are sisters. The have both been fixed. They have been litter box trained from the day I brought them home. One of them has started peeing on everything but the litter box. It started that it was just in the bath tub next to the box. Now she is doing it on the beds, chairs, and coach. Any idea as to why she is doing this? How can I get her back to using the box? Thanks again for your help.

Mike

Answer
well when the litterbox is dirty cats will start peeing on everything. if you have a lid on the litterbox take it off so the smell wont be as strong, it worked for our cats.If not just try to keep the litterbox clean, and if you catch her in the act get on to her or what you can do if get a little water gun and if you catch her in the act squirt her with a little water, she might get the idea