Helicoverpa spp. remain the key pests of cotton in Australia. The cotton bollworm, H. armigera is becoming resistant to many insecticides. With this increasing resistance as well as environmental concerns with insecticide use, we need to look into viable alternative tools that can be useful in the integrated approach to manage this pest. Semiochemicals or insect behaviour-modifying chemicals fit well in an integrated pest management system due to their specificity and low toxicity. Sex pheromones, have been successfully used in pest monitoring systems and mating disruption techniques for a number of orchard pests. In Egypt, attract-and-kill methods using sex pheromones have successfully contributed to the management of another cotton pest, the pink bollworm, Pectinophora gossypiella (Mafra-Neto & Habib 1996).