Yes, poison. Yes. I can't remember rightnow, shamefully, if the house-centipedes can getcha, but I think they can, only in a sort of irritating sort of way. Those are the ones that most creep me out. The outside kind, that look sorta orangish (usuall) and armored, can definitely give you a nice bite. I useta get bit by 'em when I tried to collect them to put them in the jars to fight the spiders. Which they'd do. It was really quite a spectacle.