Black Widows

Black Widow spiders are extremely common in the Arizona Desert.  It is also one of the most venomous spiders in North America.  The female is notorious for her red hourglass marking on the abdomen.  These critters are typically found hiding in corners of closets, sheds, and area's that are not frequently disturbed.  If you see this spider, you should be spraying regularly so they don't have the opportunity to breed to cause further problems.