39+ How To Get Rid Of Dog Urine Smell Outside Naturally UK. Mix 1/2 gallon vinegar, 1/2 gallon water, 1 cup baking soda and 1/4 cup hydrogen peroxide in a large cleaning bucket. If you have coarse concrete allow the product to soak in longer.
Do this several times to dilute the stain, and smell, as much as possible.
Leave it on for a while and then rinse with hot water. The natural enzymes in the formula eat and break down the smells at the source, and can be useful in clearing up urine odors outdoors. If you're not into using a wet alternative, just go with the baking soda. All i can say is, wow!