To all that are willing to do some hard work and don't mind getting a little dirty. Here is some advice on removing pet urine & odor from your carpet. First, in order to completely remove pet odor from carpets you need to understand its properties and how bacteria affects carpet.
You have probably asked yourself "Why Does Pet Urine Smell Bad?" It smells because it is mostly bacteria feeding on moisture. Urine is comprised of a concentration of waste products such as urea, urine acid, sodium chloride and other detoxified substances.
The ammonia smell comes from decaying urine, urine salts and bacteria. The bacteria will continue to grow as long as there is a food source or moisture. The smell can also contaminate your clothing, furniture and is not safe for the respiratory system.
So cleaning pet urine must be done properly and hiring a professional is highly recommended. If you choose to remove pet odor & urine yourself here are some tips.
Not all pet urine can be detected with the human eye. So you're going to need a special blacklight that will detect all of your urine stains. These lights can typically be purchased from a professional carpet cleaning Supply Company. They can be expensive.
After you have detected the urine stains you will be able to determine where to treat your carpet. To remove the urine smell the carpet padding must be removed and replaced with new padding. So you're going to need to pull up the carpet and replace the bad padding.
In some cases you might need to replace the carpet padding in the entire room. Depends on the severity of the urine stains.
Also, if the pet urine has soaked into the sub-floor, you will need to treat it with an enzyme or anti-microbial solution. In severe cases the sub-floor may need to be sealed.
Once the padding is replaced and the subfloor treated. You can move forward with the cleaning process. You will need to clean the backside of the carpet. The recommended way to do this is with hot water extraction.
You can add chemical enzymes and anti-microbial solutions in the water used with your hot water extractor. This is recommended because the solution is administered with some force and can penetrate the backing.
Now that the backing of the carpet has been cleaned, sub-floor sealed and new carpet padding installed, the carpet can be put back.
At this point you are going to clean the top-side of the carpet thoroughly. Again, hot water extraction is recommended to clean your carpet. Just like the backing of your carpet, you can treat the top-side of your carpet with enzymes or anti-microbial solutions.
A good thorough cleaning is the most important. At this point, after some drying time your carpet should be urine & odor free. If your carpet has been severely saturated with urine over long periods of time it might need to be replaced or consult with a carpet cleaning professional.