Reasons Cats Stop Using the Litter Box

Cats who start to house-soil after having been reliably using their litter box may do so because of a litter box aversion, a surface or location preference, or to mark territory. Determining the reason that your cat is house-soiling is the first step toward solving the problem.

• The most common cause of house-soiling in cats is an aversion to the box. Aversions develop for a variety of reasons. These include a dirty box (some cats are very particular about the cleanliness of their box), dissatisfaction with the type of box or litter, or having had a painful or frightening experience while in or near the box.
• Some cats develop a location or surface preference. This occurs when a cat finds a room or type of surface that he prefers to his box. Typical surface preferences include soft materials such as beds and carpets, or cool, smooth surfaces such as sinks and bathtubs.
• Cats who show a location preference will usually choose an area of the home that is quiet and protected or a spot where a litter box was previously kept.
• Finally, cats may urinate outside of their litter box to mark territory. Spraying is the most common form of urine marking, and is most frequently seen in male cats who have not been neutered. Cats may begin to urine mark after the introduction of a new cat or if there has been a change in their living situation or daily routine.

Even well trained cats may occasionally stop using heir litter box and develop a house-soiling problem. If this problem should occur in your cat, it is important to first determine the underlying cause before attempting to stop the unwanted behavior.

The materials, information and answers provided through this website are not intended to replace the medical advice or services of a qualified veterinarian or other pet health care professional. Consult your own veterinarian for answers to specific medical questions, including diagnosis, treatment, therapy or medical attention.

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