Review on 🔦 Black Light Pet Urine Detection - SMD LED UV Wand with Lithium Ion Battery - 395nm Ultraviolet Blacklight Flashlight for Stains, Parties, Scorpions, and Authentication – 3W by Sheila Harp

Works in the dark but not on dark colored carpets. I was shocked when I got to my favorite rug and found 12 piss spots. Luckily my dog is small. He's a lifeguard and 3 years old so I'm still trying to teach him to pee outside. I found him lying on his mat and then getting up and urinating on his corner and then lying down again and I sat right next to him! I've washed the rug and want to make sure he's learning, but his rug is dark so the light doesn't really help me unless I buy a white rug.