Darling International provides recycling and rendering services in which animal and food waste products are turned into useful commercial goods, including tallow; protein meals, meat and bone meal; and yellow grease. These products are primarily sold to animal feed and oleo-chemical manufacturers throughout the world. The company offers rendering, recycling and recovery solutions to the United States food industry. Darling also serves the restaurant industry by removing used cooking oil and pumping grease traps. Headquartered in Irving, Texas, Darling International consists of more than 40 facilities throughout the United States. Darling International was founded when the Darling family joined forces with the Swift & Co. meatpacking firm in 1882.