We seem to have carpenter ants in our log house in the Berkshires, MA. I see the wood saw dust every year during the summer. This is our weekend house and every weekend, I clear the dust and spray Bonide Carpenter ant killer and spread Terro ant dust. I haven't seen any other activity around the house. The picture shows the amount of dust over 2 weeks since I last cleared and soaked the entire area with the Bonide carpenter ant killer spray
The deck is eTrex and only a couple years old. We never see more than 2-3 ants on the deck at any point in time. There are no ants inside the house. I've not been able to find the hole that they are tunneling into the wood.
The ants are large black ants and do not fly - roughly 1/2" long.
How do I get rid of these ants? Can I spray anything stronger than Bonide or Terro dust?