Government and public works departments operate a wide variety of washroom facilities that are difficult to keep clean. In addition, many outdoor public places that were never intended to become lavatories end up getting used that way anyway.
The result is a build up of urine crystals and an odour that is persistent and unpleasant. URIN frei is used by governments around the world in a wide variety of applications to eliminate urine odour and stains in and around facilities of all sorts. It works!