most of the company's products are handled, processed and produced in-house, which includes grain storage, the grinding of grains into flour, product mixing and box manufacturing. equipment repair is typically performed by company personnel. a significant amount of product ingredients are sourced from michigan-raised crops, including "most of the wheat and some of the sugar." some sugar and shortening is imported from the states of illinois and indiana. the company began offering free tours of its facilities and operations to the public in the 1960s, and continues to do so today.