This is how my morning went. I tried vinegar-they didn't mind. I tried WD40 since it is a cure all, LOL-they didn't mind. I tried salt-didn't mind. Then I poured bleach over the entire area-they didn't like it but still had them.
I'll have to wait and see now. I have a thirty year old can of hairspray, maybe I'll try that before I can get to the store.
Yesterday I noticed they made a "bone pile" of the dead members.
They ants are not making mounds. It's an area about 1 foot, and it has many openings in it. Maybe its a starter mound. But they are small and burn and itch when they bite.