An evaluation of several urban pest management strategies to control Argentine ants (Hymenoptera: Formicidae).

Six insecticide treatments were evaluated for efficacy in controlling heavy infestations of Argentine ants around homes in southern California. All of the treatments significantly reduced ant activity over the course of the 8 wk study. The greatest reductions were achieved at homes that were treated with fipronil. Especially noteworthy was the fipronil spot treatment which reduced ant activity around homes by 90% at 8 wks. Homes treated with liquid borate bait attained a 73% reduction in ant activity at 6 wks, and 83% when combined with a perimeter spray of fipronil. Other combination treatments with fipronil were equally effective, especially bifenthrin granules (90% reduction at 8 wks). At the end of the study 79% of the homeowners rated the treatments as very effective.