These wasps are about 3/4-to 1-inch in length with black and yellow stripes. Yellow jackets are social insects that live in colonies containing thousands of individuals. They prefer to locate their nests in the ground, usually in an old rodent burrow or similar hole; but will commonly locates its nest inside the walls of a building by entering through cracks or holes in the outside walls. Yellow jackets will aggressively attack when their nest is disturbed, and can inflict painful stings. Unlike a honeybee, which stings only one time and then dies, a single yellow jacket can sting multiple times. Colonies located in or near a home can pose a threat to the persons living in the home.