PSSI is a food safety and sanitation company that provides cleaning and sanitation services to the food processing industry. The company was founded in 1976 and is headquartered in Rolling Meadows, Illinois. PSSI's services include cleaning and sanitation of food processing facilities, equipment, and transportation vehicles. The company has a large customer base in the meat and poultry industry, and also serves customers in the dairy, bakery, and snack food industries. PSSI has a strong focus on food safety and has developed proprietary cleaning and sanitation processes to ensure the highest level of food safety for its customers. The company is privately held and does not disclose financial information.