Question: How do you kill ants that come into the house? Our house is on a concrete base. They seem to come through the heating ducts in the concrete. The pipes are clay, and the ants live there summer and winter.
Answer: Sprinkle hot pepper flakes near the ducts where the ants come in. If that doesn't work, try ground cloves. Also wipe the area where you see the ants with a solution of equal parts white vinegar and water.