How Long Does an Exorcism Last?

It really depends on each individual person, because i would have to determine the extent of the demonic activity. You know, if somebody believes they're dealing with the demonic the number one thing they should do is go talk to your parish priest. If you belong to another christian faith tradition, talk to the past of your church. It's not just a matter of a demon being cast out. It's also about inviting god into one's life,. either for the first time, or inviting god back in as somebody is calling kind of fallen away from the faith.