A cat that eliminates habitually outside the litter box should be examined by your veterinarian in order to rule out any serious health issues, such as diabetes or urinary tract infections.
If your cat eliminated outside of the litter box, never get mad at him. This will only develop feelings of fear and anxiety, and won’t really solve the issue. Your kitty won’t understand why you’re punishing him.
There are instances when litter box issues are due to poor litter box maintenance, type of litter, or size and/or design of the litter box, etc. Cats shy away from litter boxes that smell so make sure to clean the box and change the litter on a regular basis. Take note that cats have a very keen sense of smell, and what may be clean and odor-free for you may still be disgusting for your cat. Also, avoid buying a litter box that is too small or difficult to clean. If you have several cats in the house, have a litter box for each cat plus one. So if you have 3 cats, you have to buy 4 litter boxes to help resolve territorial or privacy issues. For more information, visit the website.