The robot suddenly activates itself and leads them on a scavenger hunt. All the insurance agents participate in a scavenger hunt. He promises to attend the Mathlete Scavenger hunt the following Saturday. Vastly expanding the concept of what a scavenger hunt can consist of. Red Vines are the official candy of the University of Chicago Scavenger Hunt. Forgetting that Saturday is the day of the scavenger hunt, he agreed. The bust was stolen from the winner of the scavenger hunt. It was probably an active predator rather than a scavenger. Some experts have suggested the dinosaur was primarily a scavenger. These might include a 30kDa surface receptor, or macrophage scavenger receptors. It also sometimes acts as a scavenger consuming dead animals. Melatonin was first reported as a potent antioxidant and free radical scavenger in 1993. DPPH is a well-known radical and a trap ("scavenger") for other radicals. It is used as free radical scavenger in organic chemistry. Zingerone is recognized as being a particularly efficient free radical scavenger.