What kind of herb should you burn to prevent unwelcome ghost?

To prevent unwelcome ghosts, many people recommend burning sage, particularly white sage, as it is believed to have cleansing properties that can ward off negative energies. Other herbs like rosemary and sweetgrass are also commonly used for their protective qualities. When burning these herbs, it is important to set a clear intention for the space and invite positive energies. Always ensure proper ventilation and safety when using herbs for smudging.