Behavior''Organ pipe mud daubers'' are also an exceedingly docile species of wasp, and generally pleasant to have around, as they serve to keep spider populations down. Stings to humans are very rare, bordering on non-existent. However, if squeezed, Organ pipe mud daubers will sting in self-defense. There are a great many other species in the genus ''Trypoxylon'' , mostly smaller in size and less abundant.
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