Long story short Disney peed in the bathroom floor right on top of the heat and air vent and it all ran down into the duct work. I've have scrubbed the vent and duct work with Mr. Clean and then again with Nature's Miracle and it still stinks. It's especially bad when the heat runs - SHOO! Does anyone know of any great thing to use to clean it?

Poor Dizzy Dog, she's losing her mind and forgeting her potty training. So far all accidents have been on vinyl and not carpet but this one in the vent is pretty bad. Her urine has a really strong and strange smell to it too, probably her new food.

Any help is greatly appreciated.