I would call a professional, Barbara.
Ann is correct, call a professional.
I agree. I tried homemade methods and the problem got worse....it's too big a risk not to call a pro.
I third the motion. All those in favor, say Aye.
I used DE, you can get it at places like Menards. Stuff it in any area you can in the walls, anywhere an ant will go. It is not harmful. It is part of a pulverized shell, they can not stomach it. Ouch. Sorry, hate to hurt any living creature. but if you have told them you can't be in my house or you will suffer, than go ahead. : ) It will also deter spiders, bees, etc.
There is a food grade DE that is actually great for humans for a supplement.
Barbara...Don't waste time....call an exterminator!
Dependent upon your location and the severity of the problem, your home may need tented and treated. You may need alternate living arrangements for that time period.