In most cases, the Southern Black Widow spider exhibits quite timid behavior. Even when disturbed, it will attempt to escape; rather than attack. Nevertheless, professional exterminators have strongly advised, that you exercise extreme caution when confronted by this pest problem; as the venom from an adult Black Widow spider is highly virulent.
Important to note: local pest control in the region has experienced varying sizes; within different geographical locations. For example, The species in Texas can be separated to some degree, by the shape of the red markings on the abdomen; and the location.
Learn more about the Black Widow spider.