Established in 1970, Mr. Rooter is the second-largest full-service plumbing and drain cleaning company in the U.S. Recognized by Entrepreneur magazine among its “Franchise 500” and Franchise Times Top 200, Mr. Rooter franchisees provide services to both residential and commercial customers at more than 200 locations in the United States and Canada and more than 100 locations internationally through master licensees. Mr. Rooter began franchising in 1974 and is a subsidiary of The Dwyer Group.