Our house has been the home of several Sac spiders. I generally consider myself to be a friend to bugs. For the most part if we find a bug in the house we gently put it outside. Not so for the Sac spider whose bite is cytotoxic (kills cells) and painful. Putting a Sac spider outside would risk having someone get bitten there. Lewis has a small body mass and would suffer rather a lot from a bite. I choose to kill those we find. This one I kept in a jar and photographed yesterday after work. Then I squished it.