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Lar

In article ,
says...
I had little success with the smaller ants using this, but these larger
ants that began their invasion about a week ago just love the stuff and
I've been giving them a steady and considerable diet of it for the last
36 hours. However, they don't seem to be letting up, much less dieing
off. They're coming in large numbers now and forming trails. How long
does it take (or does it work)? Is it possible the solution has gone bad
sitting on my shelf for 6-7 years?

Boric acid doesn't go bad, if the ants are eating the bait and ingesting
the boric acid they will die. Boric acid is a slow acting stomach poison
so sometimes weeks are needed depending on the ant population to see
results.

Ant success can also be aided by knowing what type of ant you are
dealing with, letting you know where they may be nesting at and so on.
If by chance the new invader gives off an odor when you smash it, it is
an Odorous House Ant. They do not have typical ant nests, but are little
nomads moving about. One day they may be in the leaf matter under the
hedges next to the house, later that afternoon the colony is seen moving
under the welcome mat on the porch, the next day they may be in the leaf
matter in the gutters. But they will usually be found close to moisture,
be it dampness from the sprinklers or a leaky pipe.
--
Lar
---- to email get rid of the BUGS!