End result can be horrible death in convulsive throes by the time the sitcom on TV finishes, any way you slice it. They will all take your head off as soon as look at you. (Old Jungle saying)Might I add that it is Hadronyche Infensa that is the most dangerous. Formidabilis is *only* as potentially dangerous as Atrax Robustus, though there are many many undescribed species out there currently it is Infensa that poses the biggest threat, strangely though, once antivenin is administered the symptoms clear up in under an hour in most cases.