You need a UV black light. Order one. They cost ten bucks. Once it arrives, wait until dark. Turn off all lights. Wave the black light over your floors. Suddenly, everything glows. Dog pee lights up like a neon carnival. You will be horrified. You will also be delighted. It’s like playing a real-life horror game where your dog is the villain.
You’ll find some spots you didn’t even know existed. That one by the couch? Ancient history. Now you have a map of the battlefield. Mark those spots with painter’s tape. Now, attack them one by one.
How To Properly Clean Up Dog Pee at Carla Apgar blog