A hot start turned into a four-quarter effort for Centrals as outstanding performances from Brendan Erceg and Jacob Martinez spurred them to a 14.11 (95) to 4.4 (28) victory at Mundijong Oval on Sunday.
The Blues were in tune from start to finish en route to a third straight victory, increasing their lead at every change.
Three goals hauls to Lachlan Johnson, Matthew Thompson and Callum Collard created a diverse forward line for the home side, and it was Thompson getting things rolling with all of his three coming in the first term.
The key forward's first game of the season was proving a productive one early, with his efforts giving Centrals a 25-point buffer heading into quarter time.
Waroona dug their heels in to stem the flow of goals in the second, as the Blues managed just two majors with Eli Smith and Phil Walshaw in good form for the Demons.
But it was still enough to extend the lead to 35 at half time, before goals to Collard, Johnson and Grant Dunn saw the Blues lead by 40 points at the final change.
From there the home side assumed total control, keeping their guests scoreless in the final term while Zaine Atwell, Johnson and Brodey Eades combined for a further four goals to see Centrals to a 67-point victory.
Centrals remain in fourth on the ladder following the win, but have evened their record with Rockingham at 6-3.
Meanwhile the Demons (2-7) remain at the bottom of the ladder on percentage as the league now heads into a bye week.
L. Johnson 3, C. Collard 3, M. Thompson 3, Z. Atwell 2, J. Martinez, G. Dunn, B. Eades
E. Smith, A. Fotheringhame, M. Tilbee, J. Ness
B. Erceg, J. Martinez, D. Thomas, B. Mcphail, C. Collard, L. Johnson
E. Smith, P. Walshaw, J. Caratti, B. Taylor, R. Anzellino