Cat Piss Odor Removal
to remove (or at least reduce) the smell of cat piss on rugs, carpeting, or furniture

Mix the following ingredients in a spray bottle:

bullet 30 ml (2 US tablespoons) sodium bicarbonate (i.e., baking soda, not baking powder!)
bullet 30 ml hydrogen peroxide
bullet 30 ml liquid dishwashing soap
bullet 375 - 500 ml (1½-2 US cups) lukewarm water

Turn over the bottle several times to dissolve the baking soda. Do not shake, to avoid excessive foaming. Spray onto the cat piss stain and let sit for about 10 minutes. Then rinse or wash.