How to get rid of Dog Urine Odor Carpet. Puppy -Should I get one? Find the urine spots by using your nose. Dish Soap or Dishwashing Detergent? It is what you use to wash dishes in your sink. For example, Dawn, Palmolive, Fairy etc. Stronger strengths may bleach a carpet. The baking soda absorbs the odor and urine. That’s all there is to it. Bleaching may occur on some carpets with a stronger solution. The label will state the strength. In some countries hydrogen peroxide is measured in volume.