About Us

About ServiceMaster DAK

ServiceMaster DAK is one of the oldest, largest and most recognized of all the ServiceMaster Clean franchised businesses in the Chicago suburbs. It was established in 1975 by the two owners Dean and Eileen Knox, serving the North Shore and Northwest suburbs of the city of Chicago. Since then Dean and Eileen have expanded to 10 ServiceMaster Clean franchises in the North Shore and Northwest Suburbs, and the 2nd generation of the Knox family has joined the business.  Their son Jack and daughter Lindsay are now working out of the Northbrook office of ServiceMaster DAK.

Dean and Eileen Knox met and married while Dean was in the Navy stationed at Glenview NAS.  It was then they made the decision to live, work and worship in Chicago’s North Shore Suburbs.  Soon after Dean completed his military service he began working with another ServiceMaster licensee and realized ServiceMaster was the right fit, sharing his personal values, work ethic and integrity.

ServiceMaster DAK meets the stringent demands of the ServiceMaster Clean brand and is recognized as a leader in performance, service, and quality.  Dean and Eileen Knox, owners, have been recognized by the ServiceMaster Corporation for “Service Excellence” receiving the Marion E. Wade award for both Disaster Restoration and Residential Services.  At ServiceMaster DAK we remain committed to the pursuit of excellence, providing state of the art technology, equipment and trained, certified staff when addressing any of your cleaning or restoration needs.  “Please don’t be confused by others in our area, we’re the ones you’ve always used.”

Our Values

We remain passionate about our business and are committed to providing quality service and peace of mind for all of our clients, utilizing clear and consistent communication, genuine care and integrity in all we do. We intend to accomplish this by first adhering to our Corporate Objectives, which are;


About ServiceMaster Clean

ServiceMaster Clean serves customers through a global network of more than 4500 franchises providing janitorial services, commercial and residential carpet cleaning, hard surface floor care, commercial and residential furniture cleaning and disaster restoration services for your home or business.  The ServiceMaster Company has more than 60 years of history as a leader in the cleaning and restoration industry.

2016 List of World’s Most Admired CompaniesServiceMaster is consistently named as one of the top franchise companies worldwide by industry publications.

Fortune Magazine recently named ServiceMaster to its 2016 List of the World’s Most Admired Companies.  “This recognition is an honor and a testament to our people working together to tackle tough business challenges, demonstrating behaviors and attributes that drive a winning culture,” according to ServiceMaster chief executive officer Rob Gillette.