Oh no, dealing with cat pee on the couch is a super common and frustrating problem, but don't worry, you can definitely get that smell out! It's a tough one because cat urine contains uric acid, which doesn't just wash away with regular soap and water.
The absolute key is to use an enzymatic cleaner. These types of cleaners have special enzymes that actually break down and destroy the uric acid crystals causing the odor, rather than just masking it. Many people have great success with products specifically labeled as "urine destroyers" or enzymatic cleaners, like those from brands such as Rocco & Roxie.
To get the best results, you need to be really thorough. First, if the spot is still wet, blot up as much of the urine as you can with a clean cloth. Then, you'll want to completely saturate the area with the enzyme cleaner. Don't just spritz the surface; you need the cleaner to soak as deeply into the cushion as the pee did. Some people even use a syringe to inject the cleaner deep into the foam.
Once the area is soaked, you just need to let the enzymes do their work. You can cover the spot with plastic wrap to keep it damp for longer, which helps the process. After letting it sit for a while (check the product's instructions), you can blot the area dry. An even better method is to use a wet vac or an upholstery extractor, like a Bissell Little Green, to pull all the liquid and dissolved urine out of the fabric and cushion. You might need to repeat the whole process once it's dry, as sometimes the smell can get a little worse before it gets better. Be patient, and you'll get there
