It says right here that my carpenter ant dilemna cleared up in about six seconds. If there is another wonder substance in the world with that kind of quality, so far I haven't located it.
Feed the carpenter ants some dry "Cream of Wheat". It's safe around pets too. The Cream of Wheat swells up in their exoskeleton and kills hem.
I'll keep that in mind if the miserable little devils ever return. The DDT supply I so fortuitously stumbled over has long since been used, sending many a vexing bug to the perdition where they belong.
50/50 Baking Soda and Powdered Sugar work on most bugs. They eat but can't burp. Bug Booms!!