A thru Z Janitorial Service and Supply has been in operation for over 12 years. Owner’s Kevin and Andrea Johnson currently operate the business in Gonzales, Louisiana. A thru Z currently services approximately 40 locations in the Greater Baton Rouge area with approximately 14 employees. A thru Z Janitorial Service and Supply is a professional, licensed, insured, and bonded janitorial company providing excellent service to its clients. Choose A thru Z Building Maintenance for all your company’s cleaning needs!