Established in 1983, Green Guard is a provider of first-aid, restroom supplies and safety equipment to various businesses in the United States. It is one of the largest first-aid services companies that provide products, such as tablets, bandages, gauze pads, safety glasses and various services to its customers. The company specializes in first-aid cabinets, specialty kits, seasonal products, hearing and respiratory protection equipment, safety devices, and emergency eye care and restroom products. It delivers its products through a network of authorized dealers and corporate locations. In addition, its Web site provides various catalogs and product details. Headquartered in St. Louis, Green Guard is a subsidiary of the UniFirst Corporation.