Samantha raised her hand at Professor Morgan's question and replied, "I think the crystal ball needs to be cleaned with a cloth with mild soap and water so that the energy is cleansed. Oh, and a term called smudging is also used in order to purify the ball. I think that it involves a lit smudge stick made of sage and then the ball being passed through the smoke a number of times. After this procedure is done, you focus your mind only on the question you wish to ask."