Although pet stores sell the lights as well, they're usually smaller and more expensive. They can also be purchased at a reasonable cost online, depending on how much time you have to wait around living with the odor.
[header] How to find cat urine with a uv light [title] Buy a decent-sized uv or " fluorescent black " light. [step] Look for a long bulb (preferably longer than 12 inches) so you can cover more ground at once. Cheap bulbs with the housing included can be found at most hardware stores.