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@crimedad @crosspost Difficult to say without a region. But these seem to be potter/mason wasp nests: https://lifeonlalune.com/2013/09/13/answer-to-last-weeks-conundrum-potter-wasps/
More about these wasps: https://en.wikipedia.org/wiki/Potter_waspTheir latin name: Eumeninae.
Mud daubers don’t belong to this family.If the pots have a hole, the wasp already left it and you can keep it as a finding of another culture.