The Daggers were simply too good for a poor Fleet side who had no answer to the home side's firepower.
Tony Boot grabbed a double with further strikes from Steve Clark, Chris Moore and Jake Leberl.
After a very sedate opening in which both sides seemed to saturate the midfield to no effect, Boot opened the scoring close to the half-hour mark.
Daggers keeper Tony Roberts' goal-kick fell kindly for an unmarked Boot and his lob from 20 yards sailed over ex-Dagger James Pullen in the Fleet goal.
With half-time imminent, Fleet defender Graham Porter's clearance seemed to present no danger, but Clark gained possession and his 35-yard stunner gave Pullen no chance for the Daggers' second.
After the re-start, Fleet's best chance to score saw Ben Surey test Roberts with a stinging 25-yard effort which Roberts managed to tip over the bar.
Fleet were all over the place and not content to defend quite simply the Daggers picked holes in their defence all afternoon.
Daggers' third goal came through a neat build-up with Glen Southam finding Moore who was lethal from 20 yards for his 13th goal of the season.
Twelve minutes later Boot turned provider as Leberl's screaming 30-yard drive gave the Daggers their fourth.
Fleet's miserable afternoon was completed seven minutes before the end when Boot grabbed his second, slotting home Moore's pass from the left.