I guess I take them for granted when I work for the US’s largest dish scrubber company. We hve bags of them that they give you to take home and pass out to family..
When I asked an engineer this they said:
Microwaving and boiling do sanitize better than no measures at all but you don’t kill everything in them and they repopulate quickly. Boiling and microwaving also don’t release the trapped food particles inside that lead to future infestations.
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