Black widow spiders rarely bite humans, and typically only do so if/when they are provoked. Most bites occur when you inadvertently come in contact with widow spiders, such as sitting down on a rock outside where their web may be, or moving stacked fire wood or wood debris piles. Most widow webs are commonly found in cool, dark, undisturbed sites such as wood piles, corners or garages, crawlspaces, sheds/storage areas, or rodent burrows that are no longer active. Female black widows do not leave their web to forage or find food. They strictly eat and feed on what is caught in their webs.