I think my house is haunted. Do I need an exorcist?

Are they harming you? or do they just mess with your head on occasion? it all depends? did you just move into the home? If nothing else you should cleanse your home. (I read your other question about Wicca) You can do this with a sage smudge stick, and sea salt. If they are not harming you I would suggest leave the sprits be, for it is also thier home also. But if they are causing trouble for you and yours, by all means have them leave. You may just need to come to an understanding with them. Remeber the Wiccan rede: "AN IT HARM NONE, DO AS YE WILL" This includes yourself!!!