In the last 5 years there has been a dramatic and exciting shift in pest management approaches in Australian cotton, away from reliance on broad-spectrum insecticides as the main line of defence against pests, toward a more integrated pest management (IPM) based approach. This change has had a number of drivers, some positive, such as the advent of INGARD varieties which have reduce insecticide inputs by 40-60% making IPM more achievable, some negative, such as increased costs of pest control($400 to $1000/ha), increased insecticide resistance and environmental concerns due to off-target drift (Wilson, 2000). IPM was born in the heady days following the development and release of the early synthetic insecticides in response to just these types of problems. Insecticides dramatically increased the productivity of many agricultural and horticultural crops. However, problems with insecticide resistance, primary pest resurgence and secondary pest outbreaks due to destruction of beneficial insects, human health and environmental pollution soon become apparent (Stern et al. 1959). The aim of IPM systems therefore is to minimise the use of synthetic insecticides, to reduce the problems above, yet maintain profitability.