Can't get the smelly dog or cat urine smell out of the carpet? This method works! Spray area thoroughly with a mix of vinegar & water (50/50), blot to remove excess moisture, sprinkle a handful of baking soda over the area, and spray with a mix of hydrogen peroxide (3% - do not use any stronger) and mild dish detergent (ratio: 1/2 c peroxide to 1 tsp detergent). Scrub into carpet and let it dry.