Blot up as much urine as possible with paper towels or a clean cloth
Mix equal parts white vinegar and water
Lightly spray or dab the affected area with the vinegar solution
Blot again with a clean cloth
Sprinkle baking soda over the area after it dries
Let the baking soda sit for several hours or overnight
Vacuum up the baking soda thoroughly
Use an enzyme cleaner made for pet urine on the spot
Follow the product instructions exactly
Repeat cleaning if the smell remains
Remove and wash any couch cushion covers if they are machine washable
Air out the couch with fans and open windows
Avoid using steam or heat until the odor is gone
Test any cleaner on a hidden area first
Replace cushion inserts if the urine soaked deep inside
Use a waterproof couch cover to prevent future accidents