Hi Ian
Urine Contamination Treatment from ChemSpec. Nothing comes close IMHO.
Infact, i did a elevator in a Casion today. One of thier regulars decided the lift was a much better place to take a pish rather than the loo's!
It was stinking when i got there but was smelling lovely when i left.
Tips: its a very high foaming product so make sure you use defoamer and make sure you give a good dewell time.
Tony