If you use the classic "bleach" method, look closely at the label on the bottle of bleach.
If the fine print doesn't say "Sodium Hypochlorite", it might not be what we used to call "bleach".
Some laundry bleach is now "oxygen-based" and does not work as a disinfectant.
scrub clean: remove visible dirt and mineral deposits. You can use a wire brush on clay pots.
soak
at least 10 minutes in 1:10 dilution of CHLORINE bleach (household bleach, not "oxygen" bleach. Preferably unscented.)
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