I have a wooden bench that by design has crevices and recently I have noticed white mold-like things in these crevices:
How do I tell if this is mold or not? In any case, how I properly care for these wood furniture pieces?
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I think that dark strip is a metal spacer. I think the white stuff is white rust
White rust is zinc oxide forming on galvanized iron.
Test the strip with a magnet. If I am right it is magnetic. If that is the case there is no way that is mold. The white stuff can be removed by scrubbing. Wikipedia recommends oil to prevent white rust. I suspect that furniture polish could probably do double duty and protect the metal from oxidation as well.