Fire ants are horrible critters, carpenter ants are voracious wood eaters. It took 3 applications of 3 different pesticides to get them out of our garage.
I do not like to use pesticides!!! The carpenter ants were my exception!!!!
As far as the small black ants go I love them!!
Most people do not realize that these are beneficial. They help to pollinate fruit trees and crops. AND THEY EAT TERMITE LARVE!!!!!!!
If you have them under your house you will not have termite damage!! As far as keeping them out of the house , on the market they have small plug in the outlet electronic boxes that emit a low frequency through your wiring in your house.
The ants hate this , so they leave. You will need to have a box for every "wiring run" in your home.
I have been using these for 8 years and they work great. I got them at our local Emigh hardware store. Est $ 25-35.00 each. Well worth it!!.
If you do decide to bait then remember ants forage for sugar foods in the spring and for meat food in the fall.