+18 How To Find Cat Pee With Black Light 2023. Avoid blacklights that employ leds with a wavelength of 390nm or higher. Know that the darker the room is, the better the darker the room that you’re working in is, the easier it will be for you to see urine stains with your black light.

There a number of tricks to finding every spot the animal peed. Web this video shows how to quickly find smelly cat urine on carpets, around litter boxes, and furniture. Shine your black light about two feet from the floor, and scan around “suspicious” areas, such as corners of the room, and anywhere that smells.