When my wife and I purchased our first house, it was a new construction. Before we moved in, i noticed that we were infested with Black Widows. I mean, them suckers were in every room. I did some googling and found out that they HATE humans and will not usually live in or around humans, but usually barns or unoccupied houses. Since noone had ever lived in our house, they decided to make camp. Few bug bombs later and I counted 20 dead black widows. Wasn't pretty. I'm not skeered of them, though. I used to have a tarantula and it was awesome.