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Urine-Off

There are many urine odour control products available. Most used masking agents and detergents. Some use enzymes or alcohol. There are also some that contain chemicals to coat the urine compounds to "seal in" the offensive odours. These approaches only provide a temporary solution and are generally not useful for old urine smell or stains. 

Pet urine contain a few main compounds:
   1. Urea - a sticky substance
   2. Urochrome - give the yellow colour to urine
   3. Uric Acid - non-soluble, acidic salt crystal which are
    rich in nitrogen, hence the urine odour. 

The urea and urochrome are easy to remove with most urine cleaners. The uric acid crystals however don't dissolve easily and bind tightly to the fabric holding them. These crystals cause the continuous urine smell which is worse when there is moisture.

Urine-Off is different to other urine cleaners as it has unique enzymes that "eat" the uric acid crystals as well as removing the other components of urine. This effectively removes the urine odour and stain. All that is left behind is a mild citrus fragrance which fades as the area dries.

Black Light Clean
Now there is also available a tool to help isolate exactly where the urine stains are. Once the urine has dried you will still be able to smell it but you can't always see it. The Urine-Off Urine Finder uses a Ultra-Violet light to identify the precise location of the dried urine. This means you only have to the spray exactly where it is needed. 
No Waste ! - Saves money & time.

See the spray and the black light in the store here

Read more about how Urine-Off works at their website here