|Sons fight back|
Sons substitute Derek Carcary injected a fresh burst of energy into the game after the break. His inswinging ball on 63 minutes was tipped into the net by the Honest Men's Eddie Malone.
But although they had several further chances and two late free kicks on the edge of the Ayr penalty area, Dumbarton could not find another way through for an equaliser.
With Stenhousemuir also claiming a win away to Alloa, the result leaves Sons still needing points to avoid the relegation play offs.