Hapless Ayr Utd were blown away by a ruthless display from Livingston in their CIS Insurance Cup tie.
Steven Craig opened the scoring, firing past Ayr keeper Mark McGeown from a James McPake through ball.
A Robert Snodgrass backheel doubled Livi's lead before a Dave MacKay header made it three.
Things went from bad to worse for Ayr, as David Lowing put through his own net, before MacKay earned and converted a penalty to finish the scoring.
Livingston: Liberda, MacKay, James, McPake, Tinkler, Fox (Torrance 73), Dorrans, Kennedy, Craig, Snodgrass (Pesir 67), Hamill (Weir 71).
Subs Not Used: Mitchell, Stewart.
Goals: Craig 3, Snodgrass 36, MacKay 39, Lowing 75 og, MacKay 83 pen.
Ayr: McGeown, Swift, Lowing, Forrest, Henderson, Stevenson, Hamilton, Casey, Moore (Wardlaw 63), McLaren (Williams 71), Dunn.
Subs Not Used: Vareille, Robertson, Corr.
Booked: McLaren, Forrest.
Ref: W Collum (Scotland).