How to Clean Pet Urine Stains on Carpet

Your dog’s urine is a combination of ammonia, bacteria, hormones, nitrogen and uric acid. It’s the uric acid that creates a lingering smell even after you’ve cleaned up after your dog. It can be especially potent when the air is humid.
Since the canine sense of smell is hundreds of times more powerful than ours, it’s important to remove all traces of urine odor. If you don’t, your dog is very likely return to the same spot to do it all over again – especially if he’s not thoroughly housebroken or is left too long between trips outdoors to eliminate.
Take the following steps to thoroughly clean urine stains and odor from carpets and rugs:

1. Using paper towels or other absorbent material like a rag or cloth, blot up as much of the urine as possible.
2. Pour plain water over the spot and soak up the moisture again using clean paper towels – continue blotting until you don’t see any more yellow on the towels.
3. Mix a solution of fifty percent white vinegar and fifty percent water. You must use a liberal amount of this solution to reach the carpet fibers deep down. Work the solution into the carpet with a soft brush or your fingers to ensure it penetrates the carpet fibers below.  
4. Then blot the area using the paper towel method above to absorb the vinegar mixture. The vinegar will neutralize the ammonia in the dog urine. If you own a wet/dry vacuum extractor use it to remove excess moisture.
5. When the area has dried or almost dried sprinkle a good handful of baking soda over the soiled area.
   Mix half a cup of 3% hydrogen peroxide with a teaspoon of Dish Soap detergent.
6. Slowly pour the 3% hydrogen peroxide and dishwashing detergent mixture over the baking soda. You can also use a spray bottle for the hydrogen peroxide/dish washing detergent solution.                                                                                                                   Caution: Do not use Hydrogen Peroxide that is higher than 3% strength (10 Vol) 
7. Allow the area to dry completely. Once the area is thoroughly dry, vacuum up the baking soda. A fan or heater can assist drying. Use a hard bristled brush to loosen up the baking soda if necessary.