Night-Tracker Glowstick fastens to virtually anything in the woods-Just place NIGHT-TRACKER in the last place you have seen blood. Look back at the glow for reference point. No more searching in the dark. Just follow the lights for your trip back out of the woods. NIGHT-TRACKER works better than the Hansel & Gretel ginger bread trail. Each glowstick lasts up to 6 hours.