Don't be alarmed if you walk into a public restroom and see eerie blue lights - they're designed to keep drug addicts out. Stores are experimenting with the blue lights - they discourage addicts from shooting heroin because they make it difficult to find a vein. Stores say they've noticed a drop in drug incidents since installing the lights. But health experts warn it will take more than blue lights to combat the country's drug problem. Have you encountered blue lights in a public restroom? What's the best way to battle the Opioid crisis?