To clean a faucet aerator without fully removing it, you can use the bag soaking method. Fill a small plastic sandwich bag or balloon halfway with warm white distilled vinegar. Secure the bag tightly around the end of the faucet spout using a sturdy rubber band or twist tie so that the aerator tip is completely submerged in the vinegar bath. Let it soak undisturbed for at least one hour to dissolve exterior hard water crust. Verification: Remove the bag, turn the faucet on wide open, and check that the water stream flows straight and strong.
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