There are several forms of Entities, some benign and others malevolent. The benign form is usually happy to return to their journey and are easily sent in to the light. The malevolent varieties put up a fight and it takes an expert to get these released and sent to their respective destinations. Once an entity has been removed it cannot return to bother you again, although others may attach.
To find out whether you have spirit attachments schedule a consultation at www.theentitydoctor.com.