Elimination of Pharaoh’s ant, Monomorium pharaonis colonies with S-methoprene baits (Hymenoptera: Formicidae)

Abstract:
The Pharaoh’s ant, Monomorium pharaonis (L.) is an important species in the urban environment. This paper discussed the performance of a new bait formulation containing S-methoprene. Discussions are made on various laboratory experiments (in Budapest, Hungary and Penang, Malaysia) and field trials in the Netherlands and Hungary, particularly on the effects of S-methoprene, the acceptance of different bait matrices, the development of the bait station, as well as systematic approach on managing Pharaoh’s ant infestation. S-methoprene in two matrices caused a major disruption in the development of ant nests, and also affecting the reproductive capability of queen ants. Field trials demonstrated that 80-90% decrease in ant population after 4-5 weeks, colony elimination of the Pharaoh’s ant occurred after 13-15 weeks.