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*[Most effective was a combination of a perimeter spray with fipronil + broadcast application of bifenthrin granules, gave 93% reduction of ants after 8 wks). A sweet water bait with 0.001% imidacloprid provided about 80% reduction of ants for one month. All of the treatments significantly reduced ant activity, & at the end of the study 95% of the homeowners rated the treatments as very effective. In a survey of homeowners living in a neighborhood infested with Argentine ants, more than 70% were doing their own ant control using over-the-counter insecticides. However, only 10% of this group reported achieving complete or almost complete ant control. In contrast, of the 20% of homeowners that hired professional pest control services, 63% reported complete or almost complete ant control.]