Who Has Tried using Orange Oil Against Fire Ants?

In the past month or so, I have discovered not huge mounds, but many smaller ones and armies of ants in long lines, throughout my side yard, mostly concentrated near my garden hose against and under my porch but now pervading almost the entire side of the yard. There are MANY lines of them, they are black (not red) and they bite my dogs' paws when they're out there. This side of the house is where I have fed them, because it is the only part that is shaded. Since I'd have to drench the entire area and my dogs often go here, would orange oil solution be safe and effective if I distribute it throughout? And would a formulation with molasses and dishsoap be safe for the grass there? I don't want to destroy the yard any more than the dogs would on their own! Thanks for any suggestions!