Yes Sage will do the job...definitely. Burn it everyday/night and like Gus said leave a window open to let the Energy leave. It would be really good if you could smudge your whole house. there are MANY links about Smudging and Cleansing a room or home etc.
The Ancient Art of Smudging | Spirituality & Health Magazine | Page 1

How To Smudge Your House, Your Office or Yourself