Get new employees certified before the spray season begins. Feb 2 at Ewing Irrigation in Ft Walton there will be a review and exam opportunity. For more information: 20217. However 2017 brings a few changes. In order to earn CEUs for a current Limited Commercial Landscape Maintenance or Limited Lawn and Ornamental you need to stay for the entire exam review class or attend a different advanced class. Announcement of the schedule coming soon.