Litter Box Issues
The information below if related to litter box issues in adult cats. If you have a young kitten who is struggling to use a litter box, click here.
Cats may eliminate outside the litter box for a variety of reasons. Not all litter box issues are related to behavior problems, some may be medically related. This is why it’s important to rule out medical concerns first by a physical exam and lab testing. If the cat is deemed healthy, there are several ways to help resolve litter box concerns. The following are some reasons why cats may be avoiding using the litter box and solutions to help resolve these issues.
Stress
Has the cat had a sudden change in environment, or has a new person or pet been introduced at home? Cats are very sensitive to change and may express this by inappropriate elimination.
Solutions:
Try to create positive associations with the new member of the household. Have feeding time, play, and petting occur when the new resident is around.
Try using a calming pheromone diffuser, such as Feliway, to help with any new adjustments.
Create a calm environment for the cat while they are getting used to a new change. Have a designated "safe" room where they can go and take refuge. Make sure the litter box is placed in an easily accessible area in this room!
Unappealing Litter Box or Litter
Clean the litter box at least once daily. Completely change out the litter regularly, or around once a week. Be sure not to use any strong smelling products if you are scrubbing the litter box, as cats can be sensitive to some cleaning product smells.
Ensure the litter box is the appropriate size for the cat. It should be at least 1.5 times the length of the cat.
Most cats prefer a shallow, open litter box. However, if your cat seems to not be fond of this style, experiment with a different type, such as one with a hood.
Most cats prefer a finer textured, unscented litter. If your cat doesn't seem fond of one type of litter, experiment with different types. If your cat seems to prefer a certain texture to eliminate on at home, try using something similar to that texture.
Accessibility/Location
Place the litter box in a quiet area of the house, where they will not be disturbed by loud sounds, people, or pets passing through the area.
Ensure there are enough litter boxes in the house. There should be at least one litter box per cat, plus one.
Place the litter box in an area the cat can easily access without much effort or travel.
Place the litter box in an area where they feel safe and do not feel trapped. Avoid blocked corners or small closets where the cat doesn't have much escape.
Last Tips
Ensure you are cleaning any soiled areas thoroughly with an enzymatic cleaner. Cats are more likely to return to the same spot they last eliminated if they can smell that scent, so it's important to clean the area well.
Block off the area where they last eliminated outside the box. If that's not possible, place aversions around this area, such as by placing a plastic carpet runner "teeth" side up over the area. You may also try placing the litter box in the area where your cat prefers to eliminate, if possible.
NEVER PUNISH YOUR CAT. Punishing or scolding your cat can make them more afraid of you and could cause more behavior problems.
Additional Resources
Litter Box Lessons by Chirrups and Chatter
Solving Litter Box Problems by Dumb Friends League
Soiling Indoors by International Cat Care
Cat Not Using Litter Box: Causes and Solutions by Best Friends
Solving Litter Box Issues by Kentucky Humane Society