Düsseldorf's misery began already after a quarter when Danish Mathias Jörgensen's purification was totally unsuccessful and went into his own goal.
Before the half-time whistle, Benjamin Pavard nodded 2-0 and attack star Robert Lewandowski pushed in 3-0.
Polacken Lewandowski filled the break after 4-0 and that goal was his 43rd this season and 29th in the league. With 29 goals, he is the best scorer in the five major European leagues.
5-0 came just three minutes later through Alphonso Davie's neat finish next to the post.