Last summer we had an infestation in our kitchen for the first time in nearly 40 years. We put everything in airtight containers and used a gel ant bait to control them. They disappeared over the winter, but now are starting to come back. So far we've had a few in the bathrooms, for some reason. Maybe the mouthwash attracts them. I spray them with Windex for now; it drops them in their tracks and seems to disrupt the scent trail for a few days.
Any ideas on how to get rid of them permanently?