If the enzyme product did not completely remove the smell you can try using a vinegar solution.
Vinegar to remove urine smell from carpet.
Use multiple wet paper towels to soak up the urine and then pour the same solution one part water one part vinegar onto your carpet.
There are many home remedies that one can use to remove odors from carpets.
Vinegar neutralizes the ammonia smell of urine without fading carpet fibers making it a good choice for cleaning and protecting your carpet.
Let the carpet absorb the solution for about 10 minutes to ensure that it seeps into the lower fibers.
White vinegar will not fade your carpet fibers.
Create a vinegar cleaning solution consisting of one part white vinegar to one part water.
This article went over a few ways one can use vinegar on carpet to remove odor.
Vinegar will further breakdown the smell and help it to dissipate.
Create a vinegar solution from equal parts vinegar and water.
Simply mix one part vinegar and one part water.
To treat fresh stains just blot the urine with paper towels neutralize the scent with vinegar and deodorize with baking soda.
Vinegar neutralizes the smell of urine.
A rule of thumb to guide you when using vinegar on carpet to remove odor is to remember that odor is caused by bacteria that has had the chance the grow and form colonies.
If the urine has dried onto the carpet for a long time use a store bought enzyme based cleaner to remove the smell.
Mix equal parts of white vinegar and water and apply this to the affected area.