Is the cat urinating frequently? ................................................................................. could be medical
Have you seen blood in the urine? ............................................................................. could be medical
Is the cat vocalizing while urinating?.......................................................................... could be medical
Is the cat straining to urinate? .................................................................................. could be medical
Is the cat urinating on flat surfaces (i.e. the floor) ....................................................... could be medical or behavioral
Is the cat urinating on vertical surfaces (e.g. walls) ..................................................... probably behavioral
Is the cat defecating outside the box?......................................................................... probably behavioral
3. Litter box issues (see below)
4. Illness
It is very important that you thoroughly clean the areas where the cat has urinated, or you increase the likelihood that the cat will want to return to that spot. Clean the area with a cleaning product that does not contain ammonia. The smell of ammonia is reminiscent of urine and may encourage the cat to return to that area.
To further discourage the cat from returning to the spot, try one of the following:
Cleaning the litter box:
Cats are fastidious creatures and the litter box must be kept scrupulously clean. Review these guidelines.
Number of litter boxes:
Use this equation to calculate the number of litter boxes you need in your home: one litter box per cat, plus one. So, if you have 2 cats, you probably should have 3 litter boxes. If your home has multiple floors, you should try to have at least 1 litter box on each floor. Bear in mind that some cats like to urinate in one box and defacate in another.
Other litter box issues:
There are anti-anxiety drugs and other medications available, but they are not without side effects and should be used only as a last resort.
In some instances (e.g. separation anxiety), it may be best to consult an experienced animal behaviorist. Please ask your veterinarian for a referral.
Cats do not engage in this behavior out of spite and therefore anger and punishment are not constructive and will often exacerbate the problem.
Rule out medical problems
If possible, identify cause of problem
Make sure litter box is clean
Make sure soiled areas are thoroughly cleaned up and scent is no longer detectable to cat
Experiment with types of litters
Experiment with types of litter boxes
Experiment with location of litter box