As usual, many make a big to do over a simple act. if you hold the same priesthood that Jesus Christ held, you just say In the name of Jesus Christ I command you to leave and the demons must leave. They don't have a choice. Yes I have heard their screams as they left not happy, but they left a minute later. Everyone in the whole block heard them. That is the difference between someone holding God's priesthood and pretenders that think they hold it. one minute opposed to many days