The female sex pheromone of Cadra cautella is a two-component blend of (Z,E)-9,12-tetradecadienyl acetate (Z9,E12-14:Ac) and (Z)-9-tetradecenyl acetate (Z9-14:Ac). An earlier study documented considerable heritable variation in pheromone component titers and ratio. This study used choice and no-choice assays to quantify the consequences of variation in blend ratio in terms of male orientation behavior. Results from the no-choice assays demonstrated no effect of blend ratio on male wing-fanning and flight initiation behaviors. The number of males contacting the point source was not independent of blend ratio. Significantly more males contacted point sources of blends of both pheromone components than point sources of the major component (Z9,E12-14:Ac) alone. Results from the choice assays were consistent with weak stabilizing acting on blend ratio. The no-choice assays suggest that in male Cadra cautella: 1) the initiation of orientation flight is independent of blend ratio; and 2) location of the point source is independent of blend ratio provided both pheromone components are present. The choice assays suggest that unlike the no-choice assays there are consequences associated with variation in blend ratios that can be measured in terms of male orientation behavior. The significance of these results, are contingent on whether choice or no-choice assays are behaviorally relevant and will be discussed.