Wipe the trail and area down with very dilute vinegar after you figure out what they are after. Then they have to reforge the trail.
Maybe they could be extras in a new coke series ?
Frank, isn't one enough already?
Regarding the ants, it's a bit worrying: most winters you never see them; they live either in the hollow bricks that comprise the building's walls or under the soil all around the property. Or in selected flower pots, and then when you water them, they run like hell all over the terrace, carrying tiny white blobs which I assume are eggs. The worry comes from the matter of scale: Puerto Pollensa (my village) is on the edge of a fairly enclosed bay. Should any of the mountains collaps into the sea, we humans would fare as the ants in the tsunami that would inevitably follow. Yet one worries about resale values.
On the Spanish news a couple of day ago I think I caught the tail-end of a spot on Hiero, one of the Canary Islands, where there has been a lot of recent volcanic action, with fumaroles pumping up through the seabed. One of those volcanic islands, I think it is Hiero, is somewhat like the original Santorini in Greece, which collapsed and cause devastation and, some believe, the disappearance of Atlantis which may have been what the original Santorini was. Anyway, part of the Canary island cliff is splitting away from its main volcanic shell, and if it falls into the Atlantic, adios Florida, NY NY etc. etc. Of course, it could offer immense aid to spawning salmon.