For the third spring in a row we are seeing more ants indoors now that the season is here. They seem to be carpenter ants, and judging by the numbers found indoors the nest/colonies seems to be outside. For the life of us we can figure out where they are coming from or where they are going. We spray some pesticide ourselves but that is effective only for a short time. If anyone would like to share their experience/suggestions I would appreciate it. Thanks.

