The progress of semiochemical research on terrestrial predatory Heteroptera is reviewed, and new directions for research and the use of predators for biological control are proposed. Pheromones have been identified for several predatory stink bugs (Pentatomidae: Asopinae), and 1 species of assassin bug (Reduviidae). For another group of important predatory bugs, the Anthocoridae, pheromones have yet to be indentified, but there is considerable evidence that they exploit cues from prey (kairomones) or from plants damaged by prey (synomones) to direct their foraging. The difficulty of implementing exotic species for biocontrol of endemic pests makes managing native beneficials more important. It is proposed that, for augmentative purposes, generalist predators offer the greatest potential for commercialization because of the broad-based market for these biocontrol agents, and the potential for semiochemicals to mitigate the inevitable bottleneck of conventional mass-rearing programs.