I have ants in various places in my house. At first I treated them with baits and spray as well as using a couple of natural things. The ants would go away and come back again later. Since I've stopped paying attention to them they still come and go, sometimes in one place,sometimes in a different place. I still leave baits, Terro, at all of those places. I don't know if they help. I only know that the ants will be in the bathroom or kitchen for a few days and not be there for a few weeks and then they're back again.
Sometimes I can see that they were attracted to food and when I remove the food they go away within a few hours. Other times this doesn't help. I've also noticed that they're there because they're attracted by the electric tooth brush stand. Somehow the heat seems to attract them. When I lift the stand up it's black with ants.
I just do not see having ants as a problem. We can live together peaceably. I choose to not engage in the ant wars. LOL