AdvertisementCash For Halloween Candy? Dentists' Buyback Program Is BoomingOctober 31, 2014Allison AubreyfacebookEmailDr. Curtis Chan, a dentist in Del Mar, Calif., loads up a truck with 5,456 pounds of candy to deliver to Operation Gratitude during the Halloween Candy Buyback on Nov. 8 last year. Chan personally collected 3,542 pounds of candy from patients. (Courtesy of Curtis Chan)