I once had a friend who bought a house where every single interior door had a snarling wolf's head figurine above it. This REALLY freaked him out, so he asked me to help him "clear" the house. Using Israel Regardie's How to Make And Use Talismans I created and charged a talisman that I used with a short, appropriate cleansing ritual in each room. For no other reason than that it literally fell into my hands (I found it on the ground), I used a pristine piece of white birch bark for the inscription. I remember almost nothing about this 30-year-old event beyond the doing of it, so can't provide any specifics. He never had any issues after that, but the settling of his mind may have been the greatest benefit.