|McNiff tries to lunch Sons forward|
Goals early in both halves, from David McKenna on 7 minutes and Jamie Redman on 46 minutes (just 30 seconds after the restart), effectively sealed Sons' fate. The surface was ill-suited to a passing game and the home side dominated possession for much of the match.
The prolific Rory McAllister added to the visitors' misery with a solid strike to make it 3-0 for Brechin approaching the hour. Then on 79 minutes, McKenna added a fourth with his second goal of the match.
The fifth came from Mitchel Megginson (83 minutes) after a corner, before McKenna completed his hat-trick for the sixth, two minutes later.
Dumbarton now head into a crucial midweek away match against Stenhousemuir on Tuesday 29 March, looking for a revival of fortunes and more points to help secure safety in the Second Division.