After almost two months since we have taken the carpenters seriously as a thread to our home, I have reviewed the situation in the last few days. Regular visits to the attic and detailed inspections of the area shows that there is some very mild ‘dropping’ of saw dust and wood chips (no cleaning done upstairs to preserve) and no more sighting of living ants either.
For the moment we seem to be doing ok, though during the last very hot days we have been seeing more of the craftsmen around our house, on our balcony and in the lower levels. We have now increased the number of toxin boxes and have even put some up outside around the house.
Bottom line: the situation has dramatically improved, but we will have to continuously fight them to not have major invasion up there in the future. I think we can do that.
storing highlights into the 'extended memory'