Cat urine, which smells strongly of ammonia, is probably one of the last odors you want in your home. If your pet has had an accident on your wood floors, it may seem impossible to remove the pungent scent. Whether you have a male or female cat, you should be able to remove both the stain and the smell using common household products. Although some people recommend using bleach to clean up the mess, it's best to avoid it as it could damage your wood flooring.
Hydrogen Peroxide Methods
One of the most effective ways to remove a cat urine smell from your hardwood floors is with hydrogen peroxide, a product you most likely have in your bathroom. If the urine is fresh, soak up all of the liquid using paper towels. You can then fill a plastic spray bottle with one part hydrogen peroxide and one part water. Mix to combine and then liberally spray the solution all over the stain, allowing it to rest for about a minute. Wipe the peroxide up with an absorbent towel and repeat the process as often as necessary until the odor is gone. For an older stain, you can pour a small amount of peroxide directly onto the soiled area and then cover it with a peroxide-soaked rag. Place a piece of plastic wrap over the towel and allow it to sit overnight. Wipe the area clean with water and a mild dishwashing soap.
Undiluted Vinegar Method
You can also eliminate urine odor from wood floors by pouring undiluted distilled white vinegar into a spray bottle and apply it to the stain. Again, allow the vinegar to rest on the area for about a minute and then wipe it up with an absorbent cloth. Repeat the process as often as necessary until the offensive odor is gone. Finish by wiping the wood with a mild soap and water solution.
Enzymatic cleaners work by breaking down the uric acid in urine, turning it into ammonia and carbon dioxide, which are gases that will evaporate. Simply pour or spray the cleaner over the stain and allow it to air dry naturally, as it needs time to work. You can cover the area loosely with foil to prevent pets and family members from stepping on it. After the enzymatic cleaner is completely dry, you can wipe the area down with soapy water to remove any residue.
Finding the Stains
If you can smell cat urine odor on your wood floors but don't know the stain's exact location, you can use a black light to find it and then remove it. To do this, dim the lights in the room and walk around while shining a black light at the floors -- the urine stains will stand out as neon green spots under the illumination.