Dandi Pest Control started doing business in the Tulsa area in 1959 and Guaranty Exterminating started in 1961. The two companies have been locally owned and operated all of this time. In January 2016, the two companies merged to form one great pest control company to serve Tulsa and surrounding areas as well as the Oklahoma City metro area. Once merged, they offer over 100 combined years of expertise for their customers.