Poltergeists are mischievous spirits that focus their energy on teenagers. Other times they just terrorize the residence of a house. They destroy furniture, create chaos and may kill innocent people. They are very dangerous in every case. Exorcism is one way to get rid of these spirits but in some cases there is no way to get rid of the spirit. The other best case is to leave the house of the poltergeist and a cleansing is needed to rid them of the evil spirit. Either way a priest is needed to remove the evil spirit of the dead.