Ur-Out pet odor eliminator destroys the source of stinky pet urine – nitrogen. Because carpeting doesn’t have the decomposing bacteria found outdoors, particularly soil, dog and cat urine takes a long time to decompose. Ur-Out speeds up the breakdown of nitrogen by supplying pro-biotic bacteria to consume the nitrogen fast and forever. The reason pet urine stinks like ammonia is because ammonia is nitrogen in gaseous form. As the bacteria consumes the available nitrogen, they off-gas ammonia, which is why is stinks so bad. Ur-Out speeds up the process while including natural essential oils that counteract the odor during the process, leaving carpet naturally deodorized. More information at https://uroutodor.com/