How does Cow Pie Bingo work? A grid of squares is marked on a field at Zittel Farms with the squares numbered in random order. Your CPB ticket number corresponds to a numbered square. A cow is turned loose on the grid to deposit their “PIE”. The square containing the “PIE” is the grand prize winner of $1,000; the four corner squares will each receive $100. Winners need not be present to win- we will contact you!