When I got home last night I was greeted by the remains of a wasp infestation. There were 2 wasps on my light pole. Apartment manager Bob came up and removed them with wasp spray he squirted on a t-shirt. He grabbed the wasps off the pole with the shirt and took them outside. It seems that outside my picture window the wasps had been building 2 nests in holes in the brick & mortar on either side of the window. While I was gone, Bob and Joe killed the wasp nests and filled the holes but the 2 wasps must have been forced into the house.