Solenopsis mealybug (Phenococcus solenopsis) has been a pest of cotton in Australia since initial outbreaks in Emerald and the Burdekin in 2009. They can cause significant loss and damage to bolls via feeding and reduce lint quality due to honeydew production. With no insecticides registered for Solenopsis mealybug in Australia, this research evaluated the impact of insecticides registered for other pests of cotton. Impacts on beneficial insects was also recorded