I've been having a problem with some black widow spiders. They're on my stairs and I literally run up my stairs and run down in fear of being bitten. I killed one once and I thought that was the end of that, but then I spotted another one on my stairs. Does anybody know an effective and cheap way on how to kill these venemous black widows? It's a good think they're usually shy and run away from me when they hear me running down/up the stairs. However, I still I don't want to get too close to them. I think there are only a few spiders... I'm not sure if there are any spider babies or egg sacs.