Natures Miracle is my favorite too and I have a cat that likes to spray when stressed...you can guess who that is? Tiggy my guy who's the picky eater.
Spray area and leave, spray again if the smell is still there. Might be able to find area with black light, I haven't had much success with the black light.
Rosie - 13
Callie and Tigger, brother and sister - 12
Akira - 2.5
Peanut - 2
Nikko and Spencer, brothers - 3 months