 "Sphecius grandis" wasps frequently interact with humans because of their tendency to make their nests in backyards, gardens and sidewalks.Pest control is mostly unneeded as they nest in areas with little to no vegetation, usually ignore people, and females are not aggressive, tending to save their venom for their cicada prey, but will sting if they are grabbed or stepped on.Despite their large size, being the largest wasp to inhabit California, their sting has been reported as being between merely numbing and sharp to moderate.