How to Remove Cat Urine on Window Sills

Cats are usually pleasant and low-maintenance pets to keep--until they develop bad habits. One of the worst kinds involves inappropriate elimination--the animal urinating and defecating where it isn't supposed to. While the most common reason for this behavior is actually medical problems with cat, if yours is healthy, then she may be trying to mark territory by spraying urine. Urine sprayed for such purposes contains special hormones not present in the cat's ordinary urine. As such, the stench of it can sometimes remain long after the waste matter itself is gone.

Things You'll Need

  • Anti-bacterial cleanser
  • Baking soda, 1 tbsp.
  • Soap oil
  • Paper towels
  • Furniture polish
  • Cat keep-away spray
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Instructions

    • 1

      Wipe the urine off the windowsill with a clean, dry cloth, such as a paper towel. Spray anti-bacterial cleanser on the cloth and wipe the sill. Do not allow cleanser to soak into the sill.

    • 2

      Mix a tablespoon of baking soda with with a cup of soap oil, if the stench of urine still remains (soap oil can usually be found at your local supermarket or drug store). Dip a corner of paper towel into the mixture and apply it to the windowsill, careful not to rub the mixture in too deeply. Wait for one hour. If the smell still remains, repeat twice more until it is removed.

    • 3

      Use old-fashioned furniture polish if you still cannot get the smell out--it sometimes does the trick. Spray a wood cleanser onto a paper towel, gently applying it to the windowsill (again, take care not to rub the polish in too deeply, or the pressure may cause the urine odor to sink even deeper into cracks in the sill). Wait one hour, and repeat twice more until urine and odor are removed.

    • 4

      Spray a "keep away" chemical or natural remedy onto the sill to prevent further sprayings by your cat. These items can readily be found at most major pet store chains. Follow the directions carefully--most require an initial application, as well as subsequent ones once a day, or whenever you see your cat approach the windowsill.