Had wolf spiders in my house down there in the SoCal high desert. Scary and huge to say the least, but quite harmless I'm told. Mostly I'd find males the size of a half dollar in the house and OMG can they run fast. Exterminator assured me that that males have no venom and bites from females are extremely rare and less harmful than a mosquito bite . He said if you have them in the house they are quite efficient at exterminating pest insects such as roaches and scorpions so they're good to have around. Whatever dude, they give me the creeps, I don't like them! lol.