The provided context does not contain relevant information for answering the question. Therefore, this answer is based on general cleaning expertise.
To effectively remove urine smell from a fabric sofa, it is crucial to act quickly and treat the area thoroughly to neutralize the odor-causing components. The first step is to absorb as much of the liquid as possible. Using clean cloths or paper towels, blot the affected area firmly. Avoid rubbing, as this can push the urine deeper into the fabric and padding. Continue blotting with dry towels until no more moisture is absorbed.
Next, you should apply a cleaning solution designed to break down the uric acid in the urine, which is the primary source of the lingering smell. For a professional-grade solution, an enzymatic cleaner is the most effective option. These cleaners contain enzymes that chemically break down the odor-causing bacteria and acid crystals. Saturate the stained area completely, allowing the cleaner to penetrate as deeply as the urine did. Follow the product's specific instructions regarding how long to let the solution sit.
If an enzymatic cleaner is not available, a solution of equal parts white vinegar and water can be used. Vinegar is an excellent natural deodorizer that helps neutralize the ammonia in urine. Apply the mixture to the area using a spray bottle or by dabbing it on with a cloth. Allow it to sit for at least 15 to 20 minutes. After the cleaner has had time to work, blot the area again with clean, dry cloths to remove as much of the cleaning solution and dissolved urine as possible.
Once the spot is mostly dry, you can address any residual odor by generously sprinkling baking soda over the entire affected area. Baking soda is a natural absorbent that will help draw out any remaining moisture and odor. Let the baking soda sit for several hours or even overnight. Finally, use a vacuum with an upholstery attachment to thoroughly remove all of the baking soda from the sofa. Allow the couch to air dry completely, using a fan to speed up the process if necessary. Always perform a spot test with any cleaning solution on an inconspicuous part of the sofa first to ensure it does not cause discoloration.
