Efficacy of chlorfenapyr- and hydramethylnon-based baits on laboratory colonies of the pharaoh ant

Abstract

The effectiveness of insecticidal baits based on chlorfenapyr and hydramethylnone against colonies of the Pharaoh ant has been studied. Sugar baits containing 0.1–1.0 % chlorfenapyr are ineffective because after 4 weeks of the experiment, the viability of the colonies was not changed. Sugar baits based on 1 % hydramethylnon effectively destroyed workers, the effect on queens was weak, and depletion of the colony was achieved. Commercially produced baits effectively and completely destroy ant colonies both in the absence and in the presence of alternative food. Keywords: Pharaoh ant, baits, chlorfenapyr, hydramethylnon.