JACKSONVILLE, Fla. -- Ever grab a shopping cart and think about the hundreds of hands and millions of germs that have touched it? Winn-Dixie Stores has, and the company announced that it recently signed an exclusive agreement with Green Secure Solutions Inc. to use its patent-pending process to clean, sanitize and protect shopping carts, hand baskets, handicap carts, food trays and other equipment at the grocer’s 484 stores.