[Christien]

We had carpenter ants this year, countless armies of them. I must have killed hundreds of them over a few weeks of trying pretty much every solution noted here. Some helped, some didn't do anything, but nothing worked 100%. So we called in the pros. $200 or so and a 6-month guarantee. Haven't had any ants whatsoever in the 6 or 8 weeks since they came, so that's my advice. Stop wasting time and money and spreading potentially dangerous chemicals around and call the pros.