In Australia, problems with mirids, Creontiades spp. have increased substantially following the adoption of Bollgard II. According to Cotton Consultants Association (CCA) 2005-06 season survey, over this past cotton season two to four insecticide sprays were required to manage mirids. Unlike conventional cotton, in Bollgard II mirids are causing damage from seedling through to late boll formation stage (Khan and Bauer 2001; Lei et al. 2002) and require management intervention throughout the season. Integrated pest management (IPM) is becoming a popular management approach for mirids in the Australian Cotton Industry. With the IPM approach, insecticides are not excluded as a management option; instead judicious application of insecticides is encouraged to maximise use of beneficial arthropods in cotton fields. In Australian cotton, IPM options for sucking pests include the use of reduced rates of insecticides and use of adjuvants/additives with insecticides to obtain greater benefit. The adjuvants/additives used in Australian cotton include table salt (NaCl) and petroleum spray oil (PSO). Several studies have investigated salt mixture with insecticide against green vegetable bug, Nezara viridula (GVB) and mirids in cotton in Australia (Khan et al. 2002; Khan 2003; Khan and Murray 2004). When salt is mixed with reduced rates of insecticides, efficacy is enhanced and is equivalent to the full rate of the chemical alone. However, information on the rate of salt mixed with chemical was not clear cut. Some confusion has arisen since salt is used in pulse crops at 5 g/L of water while the cotton use rate is 10 g/L of water. It was therefore necessary to clarify this issue. The objective of this study was to determine the optimum rate of salt mixed with reduced rates of chemical to obtain maximum mortality of target pests with minimum disruption to the beneficial arthropods in cotton.