How can you remove a ghost from a home?

I would suggest a priest of your religion or also a psychic.
These spiritual leaders have a strong influence on the paranormal.

There able to perform cleansings of your home while a amateur would be able to temporarly silence the paranormal but not be able to remove it permantently. Spiritual leader perform cleansings of no charge but some may denie performing this act.

Also, it is not suggested to go around removing paranormal activity as this would make the matter worse. Though paranomal are not of the living most them where people at one time.

I would advice someone with paranormal activity in there home with first time experience to contact there local paranormal investigator to better assist them. Paranormal Investigators are far more experienced and have far more resources to answer if a spirit should be removed and recommend step to take.