A photo may not be clear because they’re tiny, so drop a few ants in a lidded jar containing alcohol and swish around, says Bertone. Then contact your local university coop extension service (find ...
Set out baits. They can be bait stations, or gel baits and dusts, which work well in voids. “House-infesting ants share food and feed one another, which is why baits can be effective,” says ...