This thumping came just two days after the Terryland Park outfit placed their entire playing panel up for sale as they battle major financial problems.
The home side had opened the scoring on 20 minutes when Greg Bolger’s shot from the edge of the area deflected past Greg Fleming. The midfielder then added a second on the stroke of half time after lifting over the advancing keeper.
In the first minute of stoppage time Mark Quigley made it 3-0 with a cool finish to the bottom left-hand corner.
As if things couldn’t get any worse for Galway, Dundalk made it 4-0 within two minutes of the restart with Ward toe-poking over Fleming.
Mark Griffin headed a fifth before Galway left-back Gary Kelly pulled a goal back.
However, Dundalk ensured a miserable trip home for the visitors when substitute Johnny Breen tapped home a sixth with 19 minutes left to play.
DUNDALK: Cherrie; Madden, Bennett, Guthrie, N Murphy; Kearns, Bolger, Ward (Maher 61), Gaynor; Quigley (Byrne 72), Griffin (Breen 61).
GALWAY UTD: Fleming; S Kelly (Gartland 72), Sinnott, Walsh, G Kelly; Ryan (Caldwell 49), Curran, Dusi, Moore (Holland 77); Gilmore, Murphy.
Referee: P McLaughlin (Monaghan).