Although it is not an anti-bacterial remedy many people claim that club soda is a good remedy for getting read of pet urine. Club soda helps remove any substance with protein in it, such as blood or urine, from a surface. It can help the area smell a bit more fresh but it does not remove the smell and it is not anti-bacterial.
The Club soda solution is to simply pour the club soda over the stains and sop u with paper towels and let air dry. If you are impatient you can also use a dry-blower to hasten the process along. The danger here is that you might be spreading the bacteria or encouraging mold-growth in the underpadding of the carpet.
You also might want to try the color safe bleach remedy. Find the pet stains and pour color safe bleach on the problem then place a heavy object such as a towel held in place with a telephone book over the problem. Repeat this process until the stain is gone. This is an inexpensive solution but it may bleach out certain types of fabric. It is recommended that you do a test patch with the color safe bleach to make sure that it does not affect the color of the fibers of the carpet. Color safe bleach is not always as color safe as it sounds.
Another common remedy is to use hydrogen peroxide. You mix one part hydrogen peroxide with one part baking soda and one part water. This might be effective on carpets or upholstery. The best hydrogen peroxide to use is 20% strength. This might work but it also may bleach fabrics and floors. After all, hydrogen peroxide is used to bleach hair.
Mouthwash is another home-grown fix for pet urine stains. After soaking up any urine with paper towels you then pour mouthwash on the stain and scrub vigorously. This is said to work because mouthwash is anti-bacterial. There may be a danger that you could end up with an odor that is described as minty ammonia. It is best to use this on tiles or ceramics although pet owners have reported good results on fabric and carpets.
Another unorthodox remedy is shaving cream. Blot up any excess urine with a paper towel and then spray shaving cream on the spot. Wait for the shaving cream to dissolve and dry up (usually takes about twelve hours) and then vacuum it up. Shaving cream is thought to be especially effective when it comes to getting cat odor out of upholstery and carpet.