Goals from Derek Doyle, Daryl Kavanagh, Danny North and Anthony Murphy gave St Patrick's Athletic their third Airtricity Premier Division win over Drogheda United this season.
Doyle's shot started the scoring on three minutes at Richmond Park with Kavanagh heading the next goal in the 50th minute.
Drogheda had Dave Rogers sent off on 64 minutes before North scored on the rebound after Stephen Trimble saved his penalty.
Murphy's excellent low and hard drive rounded off the night's scoring nine minutes before the end.
Pat's took the lead after three minutes when Murphy sent a long throw into the Drogheda United box.
Evan McMillan headed the ball down and with the Drogheda defence failing to clear the ball came to Doyle who shot low past Trimble from 16 yards out.
Pat's dominated the play in the immediate aftermath of that early goal, with Doyle, North and Kavanagh all causing problems for the Co Louth side's defence.
However, that backline stood firm with captain Rogers orchestrating proceedings, though he and fellow centre back Alan McNally were booked for rough tackles in the opening 20 minutes.
Drogheda had their chances too with Gavin Brennan heading over the bar on 21 minutes whilst Gary Rogers saved McNally's header seven minutes later.
Those chances came either side of a superb curling shot by Murphy that went narrowly over Trimble's bar.
Drogheda had a chance to get themselves back in the game on eight minutes before the break when they were awarded a free kick on the edge of the penalty area, to Rogers' left.
Philip Hand took the free but sent his effort straight into Rogers' hands.
Pat's came out much the better side for the second half and doubled their lead on 50 minutes. Stephen Bradley's wonderful cross was met by Kavanagh who nodded past Trimble from no more than six yards.
The goal came soon after Drogheda had done well to repel the onslaught that had come from a Bradley corner.
North had a chance to make to extend the lead four minutes later at the end of a move that involved Murphy, Kavanagh and Doyle but smashed his drive over the bar.
Murphy himself did likewise just a minute later from the edge of the box.
Any lingering hopes that Drogheda had of getting anything from the game were wiped out when they were reduced to ten men and fell further behind.
Rogers was shown a second yellow and then the red by referee Padraig Sutton when he clipped North in the area on 64.
Trimble did well to block North's subsequent penalty but the Pat's hitman was first to the rebound and smashed the ball into the back of the net.
Murphy completed the scoring with a cracking low drive from the right of the area that gave Trimble no chance.
Kavanagh hit the woodwork while subs Ian Daly and David McMillan also went close as the home side finished in style.