Greetings,

Probably doesn't answer your question but I have found the best way to
deal with ants is to follow them back to wherever they are coming from
and caulk the crack shut. Then they will come from somewhere else and
you will have to caulk that shut. Eventually, after long enough, you
might get lucky. This has worked for me at several properties without
hiring an exterminator. It might take a year or two of having ants off
and on for you to find all the cracks.

William