Today, we're dealing with one of the worst smells around: Cat urine!
When a cat urinates on leather, it may or may not leave a stain/discoloration. The biggest concern is usually the accompanying, overwhelming odor! The smell of cat urine is definitely one of the most difficult to remove. I've been able to successfully remove the odor through the following series of steps. (This can also be used to remove urine odor from other pets or humans.)
STEP 1: Purchase a bottle of Nature's Miracle (available at most large Pet Stores)
STEP 2: Liberally apply product until leather is saturated.
STEP 3: Seal off leather from exposure to air. This can be done by putting single
cushions into trash bags. For attached cushions, use plastic sheeting to seal
in the product. NOTE: THIS IS A CRITICAL STEP! The product has enzymes that
consume the odor-producing bacteria in the urine. The enzymes only activate
when they are WET.
STEP 4: Allow to sit for a minimum of 24 hours.
STEP 5: Remove plastic sheeting and allow to dry thoroughly, preferably in the
open-air where a breeze can get to it.
This process should remove at least 90 to 95% of the odor. If necessary, you can repeat the process. NOTE: in some cases, this process, while removing the odor, can also affect the finish of your leather. This can be remedied with redying/refinishing by a leather professional.