odorous house ant

In California, the pesty ant that invaded our kitchen was the Argentine ant (Linepithema humile).  In Tucson, we had South American rover ants (Brachymyrmex patagonicus). Here in Illinois, our kitchen ant is a native species, Tapinoma sessile.  At any given moment we probably have two or three wandering about our countertops. The common name for this small brown insect is the Odorous House Ant, a reference to both the strong blue-cheesy odor these ants emit when crushed and to their habit of foraging indoors for food.  They don't normally nest indoors, though, they prefer to be outdoors…