Each year we are overrun with ants for a short time. As soon as I see one, I know there are more present, I just have to find their trail. That being done, I place Terro in their path, and after they gather around and consume the sweet liquid, they take it back to their nest to infect the rest of their colony.
I can't help but feel sweet satisfaction (pun intended) :)
If they would stay outside where they belong, I wouldn't have to be so vicious!