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Control of the red imported fire ant, Solenopsis invicta in traffic signal control cabinets (Hymenoptera: Formicidae)
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The red imported fire ant, $olenopsis invicta Buren, causes numerous problems, including the invasion of traffic signal control cabinets. Ants remove insulation from wires and bridge terminal blocks, causing shorted circuits. They enter mechanical switches and cause malfunction by interfering with the action of the switch es. These are especially serious problems as the components in cabinets control traffic signal lights at intersections. We tested several insecticides and practices to reduce the im pact of fire ants in signal control cabinets. We have found that the insecticide chlorpyrifos is effective in reducing ant populations in cabinets. Additionally the sealing of electrical components to eliminate the entry of ants is important. These two practices can eliminate the problem in most cases.
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