Sage is a powerful herb which is held sacred in many religions due to its effective purifying energies. This potent herb has been used for thousands of years in several rituals and ceremonies. By clearing your space on a regular basis you allow positive and life fulfilling energies to come into your life. The more you use it the more results you will see. It is also important to clear your space immediately after a negative event has taken place in that space, as well as your own energy field. If you have or are moving into a new space, make sure to clear it of any unwanted or negative energies.
If you cannot find the Native White Sage, you can use the South African Sage, sometimes known as Imphepo which can often be bought at esoteric shops.