#$%^&*AU2016244321A120161103.pdf#####AQUEOUS INSECTICIDAL POUR-ON FORMULATION Abstract A topically acceptable aqueous pour-on formulation adapted for localised external application to an animal, which format includes an effective amount of a water insoluble insect growth regulator (IGR), a suspending agent, a surfactant or mixture of surfactants, and an aqueous carrier.