One 2x6 in my kitchen sub floor has insect damage. There is no other board showing damage. No signs of life. We've never had bug problems in this house. And, on top of everything else, we live in high desert and termites are very, very, rare here.
So, my guess is it looked like this when it was installed 37 years ago, shame on the builder. However, I thought I'd check with the group, knowing we have a bunch of very bright people here, and see if anyone thinks the same or thinks I have a problem.
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