Once you know which cat is marking, here are some things you can do to solve the problem:
- Neuter or spay intact cats – Neutering eliminates urine marking in 90 percent of male cats and spaying is 95 percent effective in female cats.
- Odors – Clean up all urine marking as soon as possible with an enzymatic odor neutralizer. A black light can help you to identify all of the spots where your cat has marked.
- Stress – Try to reduce any stress in your cat’s life. Keep your cat’s life as routine as possible. Spend plenty of time playing with your cat. If there is an unwelcome cat outside the house, keep doors and windows closed. Try to block the lower half of the windows to make the sills inaccessible. Move furniture to deny access to certain windows and use blinds and curtains to cover windows.
- Litter boxes – Make sure that there are enough litter boxes in your home. You will need one litter box per cat, plus one. (So if you have two cats, you will need 3 litter boxes.) Make sure that the litter boxes are cleaned regularly (at least once a day) and make sure that the boxes are placed strategically at all levels of the house. Place the boxes in low traffic areas with at least two exit routes.
- Environmental enrichment – Provide more perches or cat trees. This will give your cats more personal space away from the others.
- Pheromone spray – Try using a pheromone spray like Feliway. These sprays contain facial pheromones and they can deter some cats from urinating in particular locations.
- Medical examination – See your veterinarian to rule out all possible medical causes.
- Medications – In some cases, urine marking can be reduced through the use of medications. These medications will help to stabilize the cat’s mood and reduce anxiety.
To learn more about cat spraying, go to Cat Spraying: What Is It and How Do You Make It Stop?