The Daggers were in control from the first whistle to last and could have won by a bigger margin. But they were happy to settle for their first 5-0 win since beating Shrewsbury by that margin in August 2009.
Apart from goals from Dwight Gayle (2), Luke Howell (2) and Medy Elito , Howell and Michael Spillane missed decent chances and Rotherham keeper Any Warrington made two fine saves from Gayle.
At the other end the Daggers kept their visitors so quiet that keeper Chris Lewington was only seriously tested twice in the entire 90 minutes. He beat away a well-struck volley from Lee Frecklington in the first half – then went full length to save from Michael O’Connor in the dying seconds.
Apart from that it was the Daggers all the way and they never looked back after getting a flying start with a goal from Gayle in the sixth minute. He took a pass from the impressive Jake Reed on the right and beat Warrington with a low cross shot.
Warrington tipped a fine free kick from Matt Saunders over the bar and an effort from Gayle was headed clear with the keeper beaten.
A great run from man-of-the-match Femi set up the Daggers second in the 35th minute. He finished with a square ball for Howell to fire home. The first half finished with Saunders hitting a left footer just wide.
The Daggers continued to call the tune in the second half. But they had to wait until the 74th minute for a third goal. Howell got that one after more terrific work from Femi to set it up.
Six minutes later Elito made it four with a shot Warrington got a hand to but could stop entering the net. Gayle completed the rout in the last minute following a superb low cross from sub Brian Woodall.
That set the seal on a brilliant performance that left boss John Still purring with pleasure.
“We controlled the game all through, played at a high tempo and our pace and movement made it difficult for Rotherham to cope,” said Still.
Daggers: Lewington, Wilkinson (Bingham 89), Femi, Doe, Spillane, Elito, Reed (Woodall 84), Saunders, Howell, Ogogo, Gayle Subs not used: Seabright, Scott, Green, Hoyte, Currie
Attendance: 1720 (297 away)
Man of the Match: Femi