A LONG HISTORY OF SANITATION SOLUTIONS In 1940, John J. Tennier opened Tennier Manufacturing Company in Hamilton, specializing in cleaning products and sweeping compounds. Over the next 35 years, the Tenniers built the leading cleaning supplies company in Southern Ontario, providing janitorial and sanitation supplies and equipment to some of the most well-known businesses, stores and manufacturing facilities in the area. Almost 80 years later, Tennier is still recognized as the company to call for commercial, industrial and manufacturing cleaning solutions. And while we value our long history, and the decades-long relationships we’ve built with our clients, customers, employees and suppliers, we’re always looking toward the future. THE ADVANTAGE OF EXPERIENCE With more than 500 clients and customers across Southern Ontario, from offices and clinics to retail chains and manufacturing facilities, businesses call us when they need cleaning and janitorial products, industrial absorbents, and cleaning equipment – and want the process to be reliable, easy and seamless.