If they were regular ants you can shoot some borax where ever they are with a turkey baster. Ants will carry that back to the nest and it kills them all. Same borax that used to be sold as hand cleaner and is also used as flux for brazing. Don't know if this method would apply to meat ants.

I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!