This product smells pretty good, helps remove urine stains, and supposedly has enzymes that destroy urine odors. I am not sure of any way to tell for sure. I do know I've used this on urine and vomit, and if you have pets you probably will need it, too. Just remember to saturate the area. Don't scrimp on the product and expect it to work. Spray a lot on, mop up as much as possible, soak again, then step on the paper towels every time you walk by. The weight will help the towels remove the stain. Sounds weird but it works.