"Mark Thorson" > wrote in message
...
>I suppose I should consider myself lucky that it's been
> a couple years since the last invasion. They used to be
> much more frequent.
>
> I've never used insecticide. The last time I saw someone
> use Raid, it seemed spectacularly ineffective. The ants
> were swimming around in the stuff. On the other hand,
> I once stopped an ant trail in the bathroom by spraying
> Tilex tile cleaner on it. It killed the ants instantly
> and the residue kept them from rebuilding the trail.
> I might try that again, if I decide to go nuclear.
>
> Right now, I'm trying to knock down the invasion by hosing
> down the ant trail on the outside of the house every couple
> of hours. That works during the day, but they build it up
> again at night. Ants don't appear to sleep.
>
> Any other tactical suggestions cheerfully accepted.

Boric Acid.

http://www.domyownpestcontrol.com/bo...c-114_122.html

Dimitri