The burning of smudge sticks is called smudging. Smudging is used to cleanse a person, place or objects of negative energies, spirits or influences.
Use: To cleanse/smudge yourself or others, fan the smoke over your body, front and back. Smudge rooms by walking around its perimeter paying attention to corners and behind doors. Constantly fan the smudge stick as you walk. Cleanse crystals and other objects by fanning the smoke over them.