I do animal rescue and enzyme cleaners are great for most messes, but if there’s event a hint of a urine or feces scent, then I bring out Zero Odor. I’m stuck with carpeting in my house, and there’s really nothing else that will remove cat urine odor as efficiently and effectively without leaving some awful other unpleasant scent behind. Usually, it takes pouring it on, if the urine has gone all the way down into the padding. Surface smells can just be wetted down with the spray bottle, but I order the gallon size refills to just pour on patches of smelly carpet.
