Multispecies sex pheromone trapping for the cotton bollworm, Heliothis zea (Boddie), various slow release pheromone dispensers for H. zea and the tobacco budworm, Heliothis virescens (F.), and two types of inverted cone sex pheromone traps were evaluated. Baiting of the same or adjacent H. zea pheromone baited traps with pheromone dispensers of the black cutworm, Agrotis ipsilon (Hufnagel), true armyworm, Pseudaletia uniipuncta (Haworth) and fall armyworm, Spodoptera frugiperda (J.E. Smith) showed that multispecies trapping is not feasible and that spacing of H. zea-baited traps and traps baited for the other species is a concern and should be studied further. Evaluation of commercially available laminated plastic, membrane, rubber septum, hollow fiber, and experimental polyvinyl chloride (PVC) capsule (2.5 and 5.0 mg) dispensers for trapping H. zea indicated that the laminated plastic dispensers were the most effective. Two different lot numbers, VO283 and VO436, of the laminated plastic dispensers for H. zea were equal in effectiveness; the longevity of the VO436 dispenser was determined to be 2 weeks under Central Texas summer climatological conditions. The VO436 laminated plastic dispenser captured significantly greater numbers of H. zea males than 5 virgin females. Ramaswamy rubber septum dispensers for H. virescens were very effective in comparison to Hendricks PVC and Flint rubber septum dispensers and virgin females; however, the longevity of these dispensers was poor. Wire cone traps captured significantly greater numbers of H. zea than collapsible plastic traps when compared in corn, cotton, sorghum, and soybean. Recognition of the considerable variation in the available technology for sex pheromone trapping of H. zea and H. virescens and development of criteria for a standard trapping system will be essential for practical usage.