How do you banish a lingering spirit?

First off are you sure it is a ghost and not a lingering demonic source for the average ghost would have been long gone by now.... Also the things that would work on getting rid of a ghost will never have any effect on a demonic source, Also you will have to call on the blood of Jesus and the light of God for no demon can stand in the light or in the blood of Jesus the Christ.... And if you do read the bible It will tell you how to use the Light and call on the blood to fight off demons.... Unless you are Catholic For the Holy Roman Catholic Church removed that section from their bible, Along with the Rites of the Exorcism.... But if you need more help just drop me a line and I will tell you what you need to know for your demonic battles..............