Shane White, Cody Cooke and three ex-Bideford players – Matt Wright, Ben Gerring and Craig Duff – did the damage as the White Tigers extended their winning run in the league to six games.
The former Bideford partnership of Rob Farkins and Gerring looked solid at the heart of the home side’s defence as they kept close tabs on Ben Watson.
The pace of Isaac Vassell, another who has turned out for Bideford, proved menacing throughout and 25 minutes in the forward snuck past Matt Villis. His shot was parried by goalkeeper Grant Fisher but Wright poked the ball into the empty to make it 2-0.
The Robins had several good opportunities from set-pieces but they failed to provide a threat on goal before the close of the half with a lack of aerial presence.
The fourth came five minutes later as Gerring headed home from a set-piece, showing the Robins how it is done.
But a minute from time substitute Les Afful threaded through Duff to neatly tuck away the ball and claim a romping 5-0 win for Truro who climb to fourth while Bideford remain sixth from bottom.
CITY: Burns; Farkins, Gerring, Pugh; White, Ash (capt), Duff, Cooke (Green 65), Greenslade; Wright (Hayles 65), Vassell (Afful (65).
Subs (not used): Tully, Moore (GK).
Yellow cards: Duff.
BIDEFORD: Fisher; Sampson, Reed, Veal, Villis, McGath, Groves, Parcell (Barker 80), Watson (Squires 76), Chaney (Milton 51), Wood, Squires. Sub (not used): Harrison.
Yellow cards: Groves, McGath,
GOALS: White (7) 1-0, Wright (25) 2-0, Cooke (50) 3-0, Gerring (53) 4-0, Duff (90+1) 5-0.
Referee: Matt Eva.