Safety-Kleen | 29,671 followers on LinkedIn. Safety-Kleen is a leading environmental services company engaged in used oil recycling and refining (EcoPower brand), parts cleaning and other responsible environmental solutions. We have approximately 4,300 employees serving approximately 270,000 customer locations in the United States, Canada and Puerto Rico. With 45 years of experience, we provide our customers with the protection they need for all of their environmental waste issues.