In the last three years I've found eight black widow spiders near my parent's house (within 100 feet). This is near Fairfax Town Center, in an old neighborhood (1950s). We never had them growing up... now they seem to be everywhere. Usually I'm helping my parents with yard work when I find them. They are always on man made objects (bottom of trash can, inside landscaping light timer box, jack stands by the woodpile, under a bird bath, on a tarp, etc). Anyone else find these? Kinda blows. Hoping they are not found in the house eventually... Here is a video of the last one I found, about a month ago.
http://www.youtube.com/watch?v=hzmWXT9ynR0