I've never seen these peppers shipped without the harvester washing them first, not "these days" anyway.
I do have a grower/harvester client that picks them, and prior to the drying process they are washed and sanitized and are then sun dried.
You should be able to get then "clean" from the grower/packer.
Wash Before Using - that I have seen on dried pepper packages.
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Glenn Oster.
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