A little O this will do the trick: http://www.nilodor.com/shop/show/category/Commercial_%2526_Janitorial/department/Bio-Enzymatic/id/62 Bio-Enzymatic Urine Digester This biodegradable, four strain bacteria formulation will provide immediate relief by neutralizing and eliminating the source of the odor. Extremely efficient at breaking down and digesting organic waste. The ORIGINAL fragrance has been approved by the Carpet and Rug Institute (CRI). Applications: Restrooms, Urinals, Trash Containers, helmets