If there's a 10% chance that carpenter ants are destroying the structural integrity of your home, you should be looking for the cause of the water damage.
Assuming it is fiscally and temporally possible to eliminate the cause of the water damage I am still going to try my hardest to eradicate the carpenter ant infestation.
Water damage by far is the most destructive thing in a house. There is no way that ignoring it is correct.
You can fight the ants all you want, but you'll still get mold, and rot, and eventually have to replace the beams (if the water has been there longer than a few weeks then replacing the beams is almost a given). The ants are the least of your problems.
I never said ignoring it was correct. I said that it is not always possible to take care of the problem immediately; cash and time are finite resources for me, plus I cannot control the weather. I'm saying after you fix the problem (or in the interim) break out the Terro Gel and dose the little sappers with boric acid.
If you think a few weeks of water damage warrants replacing the beams I am afraid you were ripped off by a contractor. Speaking from personal experience there was a leak in the bathroom when I bought my house that had been there for not a few weeks but many weeks. I ripped down the moldy sheetrock, fixed the pipe and let the joists air out. Sure there is water staining on the joists, but they are 8x2 oak joists (1929 lumber when dimensions were real) and the joists were dry by the time I had taken down all the old plaster and lathe in the dining room. When I buttoned up the ceiling they were dry and stiff enough that they offered significant resistance when I screwed in 2 inch drywall screws.
Sadly it is also the problem with vocal members of the animal rights movement. I am by no means a Jianist but I do try my hardest not to step on insects/bugs as I walk down the sidewalk. That being said if I have to choose between my house and the lives of carpenter ants I am choosing my house every time. Comments like the "karma comment" do little to advocate animal rights...
