[From the Spring issue of the UC IPM Green Bulletin]

Argentine ants can be a damaging ant pest species in both agricultural and urban environments in California. Outdoors, they disrupt biological control by tending honeydew-producing pests and protecting them from natural enemies. Argentine ants are also common invaders of urban residential settings, making them the nuisance ant species most often treated by pest management professionals (PMPs).

Contact insecticide sprays are frequently used control options for Argentine ants due to practical advantages, such as easy application and...