this post was submitted on 24 Jul 2025
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What is this thing?

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It looks like it came from some form of pest, but there are no obvious holes or material above it. It's between glass and a screen with no obvious openings or holes. None of my other windows have it. We did have the house re-insulated recently, but I don't think it looked like this. Any help identifying what's going on?

I'm geographically located in Northern NJ I'm the US in the suburbs.

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[–] AA5B@lemmy.world 3 points 1 month ago* (last edited 1 month ago)

Maybe carpenter ants. At one point I discovered them by a pile of sawdust like that on my coffee table.

It turned out there was enough of a roof leak to cause some rot despite no visible leak symptoms, the ants were following that, and happened to discard the sawdust out a tiny hole in the ceiling above my coffee table. It sucked because that was the signal to replace the roof