It looks like holiday cheer is making its way through the septic world.Last month we showed you how David and Andrea Knight, owners of Knight Environmental Services, kicked off the holiday season last year by decorating their House of Imports vacuum truck for the town’s Christmas parade in "Deck the Haulers for the Holidays."Dervin Witmer, owner of Pump That Septic, a subsidiary of Dig-It Excavating, in Cassopolis, Mich., took a crack at trimming his vacuum truck for this year’s holiday parade in Dowagiac, Mich.“We decided to decorate our truck for the first time this season,” says Witmer. “We had a
