First, you need a few items to help you out:
1. Towels or rags (should be absorbent)
2. Bacteria/Enzyme Digester (can be found at any pet store)
3. Plastic wrap
"How to" steps:
1. If the stain is fresh (wet), place towels or rags on the spot and step on it. Start gentle and then increase it up to using your full weight. Repeat with more towels and rags until no more liquid comes up.
2. Apply the bacteria/enzyme digester to the stains by following the directions on the bottle. This step takes time, so be sure to follow the directions closely.
3. Once the bacteria/enzyme digester is applied, put the plastic wrap over the stain and step on it several times. Leave the plastic wrap on the stain during the entire time to make sure the spot does not dry out.
4. If the accident site is one that has been stained a number of times, its possible the bacteria may break down and create a large amount of ammonia. If this becomes the case, you may need to neutralize the spot after the digester has been working for about four hours. (This is where vinegar comes in.)
5. Mix one cup of vinegar to a gallon of warm water. Rinse the area with the solution and apply, again, the bacteria/enzyme solution.
6. Let the solution sit for a while, then use fresh towels or rags to soak up the liquid.
Repeat steps, as needed.
Should the pet stain or odor remain, call a professional deodorizing specialist. In home carpet cleaning may help remove what remains of the stain.