Yes they can, just yesterday in my game the rich family dressed in cowboy clothes went to a restaurant that I built in Willow Creek, I was a bit annoyed when they started walking like zombies in the restaurant attracting the attention of everyone and interrupting their meals, I haven't played Strangerville's story yet, and I don't want households from Strangerville to freak out my households from other worlds so I went to edit world and deleted all of them. If they can't be contained they shall be removed from my save file.
