Ten-man Hereford hit lowly Farnborough for six without reply at Cherrywood Road despite the dismissal of their new striker Leroy Williams, who also made a goalscoring debut.
On-loan teenager Williams, who arrived from Walsall on transfer deadline day, opened the scoring for Graham Turner's side before being sent off for violent conduct, while two goals each for Daniel Carey-Bertram and Adam Stansfield and a Robert Purdie strike completed the rout.
Williams, 18, lashed home Andrew Tretton's pass on the edge of the penalty area early in the first half but was given his marching orders for retaliating following Anthony Fenton's challenge.
Fenton misdirected a header against his own woodwork moments later but Hereford had to wait until Carey-Bertram converted a penalty, following Adam Theo's foul on Purdie, three minutes after the interval for their second goal.
Carey-Bertram stabbed home his second from close range, Stansfield headed the fourth from a Simon Travis cross in the 80th minute, Purdie fired the fifth from 20 yards seven minutes later and there was still time for Stansfield to volley home number six.