Nature's Secret Weapon Professional pet-dog-cat urine detector flashlight LED UV urine light Quickly locates urine stains from leading pet odor removal experts. National Top Selling Professional Cat & Dog Urine Stain Detector Outperforms Other Pet Urine Detection UV Flashlight Brands Finds Pet Stains Fast for Pinpoint Treatment Operates on 3 AAA Household Batteries (not included) Tens of Thousands Sold Nationwide