I had them all over my house at one time. Now they are gone! Try to find out exactly where they are coming in. Then use maxforce ant killer gel or DuPont Advion gel.
They both come in a small tube that is about no more than $5-$10. Put a little out and it will attract them , they eat it and take it back to colony and wipes them out! I haven't seen any since I used it! Years ago. You can find it on EBay .
Shirley Smoker , 22.5" Weber Kettle,Thermapen, Thermapop, Timestick