Eliminating outside of the litter box is frustrating for cat owners, but can also be a sign that your cat is experiencing stress. The cause can be tricky to uncover but the problem is not impossible to overcome. It is imperative that a medical cause be ruled out, as urinary problems are quite common in cats. See “Common Medical Conditions in Cats” below for medical causes of inappropriate urination. Once your cat has been cleared by the vet, there are many resources available to help you.
The Humane Society has published articles on litter box problems and urine marking problems. It is important to understand the difference, as they each have their own causes and treatments.
The ASPCA also has resources for litter box problems and urine marking.
If you are still having difficulty resolving your problem, it may be time to seek professional help. Work with your veterinarian to find a Certified Applied Animal Behaviorist that can help you come to a resolution.