Treating the Smell
In a condition that you cannot the treat fresh urine immediate, the urine can be very smelly. It required some different techniques. The first step is to find the source of smell. It can be quite challenging. However, you can use your nose to guide you to find the source of smell. After you find the urine stain, you should wipe the stain using water and clean tower. You should do it several times. After that you can use enzyme-neutralizing cleaner to break down protein-based molecular in urine that causes unpleasant smell. You can find some products of this cleaner in the market. Another option is to use water and vinegar. It can be also a good option especially when you try to remove the smell from hardwood things.
Those are how to get rid of dog urine smell outside. You can follow the steps to overcome the dog urine smell. Sometime, you have to do it several times until it works. Good luck.