The Demons have nearly caused a big upset falling one-point short of toppling 2020 grand finalists South Mandurah.
Waroona booted five goals to two in the final quarter but ran out of time the Falcons holding on to record a 11.9.75 to 11.8.74 triumph.
Brodie Wemm kicked five goals for the Falcons while Callum Dews and Zac Moody were some of the best on ground.
Rockingham remain undefeated after a 67-point win over Mandurah while Centrals recorded their first win of the season coming from five-points down at three quarter time to defeat Halls Head by just four points.
LADDER: Rockingham 8, South Mandurah 8, Centrals 4, Mandurah 4, Waroona 0, Pinjarra 0, Halls Head 0.