The Argentine ant is a different ant than the fire ant. They are sometimes referred to as "crazy ants" because they do not forage in a line but seem to forage in a sparse but wide swath of ants moving in all directions. We have them in the Houston area, but I have not seen many yet. I have read that they are also a natural enemy of the fire ants and will prevail in a battle between the two. Not so sure that is a good thing. I did a cutout once where I had to remove a small portion of a roof to gain access to the bees. When we were packing up to leave, Argentine ants were invading the roof where we had dripped honey, it really looked "crazy" the way they were moving, there was about a 2 foot wide swath of ants zig zagging back and forth, however, the general direction of the swath worked upward toward the area with the honey.
"The UNKNOWN, huh? That would be SNORBERT ZANGOX over in Waycross."