Nestlé Purina Petcare is a St. Louis, Missouri-based subsidiary of Nestlé. It produces and markets pet food, treats and litter. Some of its pet food brands include Purina Pro Plan, Purina Dog Chow, Friskies, Beneful and Purina ONE. The company was formed in 2001 by combining Ralston Purina, which was acquired by Nestlé for $10.3 billion, with Nestlés Friskies Petcare Company. As consumers became willing to spend more money on their pets, the company grew. As of 2012, it is the second-largest pet food company globally and the largest in the United States. In 2007, Nestle Purina voluntarily recalled some of its products after a widespread contamination was discovered in the pet food industry, due to ingredients from China. The company has been recognized for sustainability practices in its manufacturing and sponsors many pet-related charities and events. It markets its pet food through crowd-sourced competitions, sponsorship, mobile apps, and television advertising. Nestlé Purina Petcare was formed in December 2001, when Nestlé acquired Ralston Purina for $10.3 billion and merged it with Nestlés pet food business, Friskies PetCare Company. Ralston, which started as a horse-feed business in 1894, had marketed the Dog Chow, Cat Chow and Pro Plan pet food brands, while Nestlé produced Friskies and Alpo brand pet foods.