The best and simplest system for MOST shells (some are too fragile for this) is to soak them in diluted (1:1) bleach for 10 minutes to a few hours (depending on the degree of encrustation, etc.) then cleaning any detracious material from the surface with a pick, if necessary. Repeated bleaching could be necessary.
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2021/05/31 · Use a small amount of vinegar into a bowl or cup and use a toothbrush to gently scrub the shell. You might have to do this a few times to get ...
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