Juniper, above clearing negative energy can also create a safe, protective, positive space once the negative energy is removed. It has a sweet and spicy fragrance and abundant blue berries. It is probably one of the most ancient plants with protective energy, and is used in spells of cleansing and prosperity.
White Sage is one of the oldest and most well-known herbs for energy cleansing. Using sage to cleanse a home helps to neutralize the energy of the space, relieve your worries, harmonize your mind and clear away negative thoughts.
Smudges may help clear the air, scientists have observed that sage can clear up to 94 percent of airborne bacteria and disinfect the air. Also, when sage is burned, it releases negative ions, which is linked to putting people into a positive mood. 
Smudging requires simple ingredients like matches, smudging herbs, and a smudging bowl. Before you start, remember to open a door or window, because the unwanted energy you are trying to clear must have a pathway to get out. First, light one end of your smudge, allowing it to catch fire and burn for several seconds. Then gently blow on the lit end - the smudge will begin to glow and smoke. Lay the smudge on a heatproof bowl to catch the ashes as it burns.