The company roots go back to 1900 and Chicago, Illinois. Mr. Bell worked hard in these early days even during World War 1. Eventually Mr. Bell came to Dallas Texas around 1930 and got International Exterminator started with Harlan Baker. Mr. Baker expanded operations and moved the operation to Fort Worth Texas. From there offices where developed from El Paso to Houston. The industry has changed a lot since then and Mr. Baker was an active part of creating professional industry associations and promoting the importance of education for the service personal. As an engineer he developed tools and procedures for the new materials that came after World War 2.