For several days, with the change of weather and/or extreme heat there is a significant presence of carpenter ants in and around houses. We are seeing reoccurring activity of carpenter ants inside wood structures. In some cases, it is a reinvasion of treated areas of only a few weeks or months. The strong outside presence may also be to our advantage…. Indeed, the activity of a large number of carpenter ants gives us some indication of the origin or source of the problem in the infested structure. An important element for a comprehensive INTEGRATED PEST MANAGEMENT.