I've been scrapping an above ground pool. Wasps LOVE making nests under the deck, always have since it's out of the sun and (was) reasonably cool thanks to the water in the pool, and this time of year undisturbed (typically open it in two weeks). I went running for cover a total of three times during the process of tearing this darn thing down from when I began percussive disassembly on a panel only to be greeted by a handful of angry stinging insects. Worst was a panel I managed to unbolt and completely remove only to find a nest underneath with several very unhappy occupants.