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getting older rule
(files.catbox.moe)
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
If it is something that has been left untouched for some years, then the dust is probably too thick to be simply blown away (and would probably create a bigger mess than what you started with), I imagine. Use an old wet piece of cloth.
Or a vacuum, which imo is better for dusting than any of those purpose made cloths