Baits are a very effective, but expensive, method of controlling existing fire ant colonies. USDA-ARS has worked to make oil-based baits commercially available to the public. Baits do not harm wildlife because they break down in sunlight.
How they work:
Insecticide is dissolved in oil and absorbed on granules.
Granules are easily broadcasted over small and large areas.
Fire ants feed on bait by sucking oil from granules.
Fire ants feed the insecticide to others by trophallaxis (an exchange of alimentary liquids).
Types of Baits:
Abamectin (an example is Ascend®)
Fenoxycarb (examples include Award®, Hi-Yield Fire Ant Bait®)
Hydramethylnon (examples include Amdro®, Combat Fire Ant Killer Granules®)
Fast acting as it kills ants in three to five weeks.
Methoprene (an example is Extinguish®)
Prevents larvae from developing normally.
Effects are slow, but control lasts for months.
Pyriproxyfen (examples include Distance®, Spectracide Fire Ant Bait®)
Spinosad (examples include Justice®, Ortho Fire Ant Killer Granules®)
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