Extremely powerful antibacterial, bactericidal oil is a much more effective germ killer than the well-known tea tree oil. The extremely high level of citral (about 87%) makes it a powerful antiseptic and antifungal agent. Lemon Myrtle essential oil has a remarkable ability to kill germs, especially in diffuser blends, aroma lamps, sprays, and other products designed to support the respiratory and immune system and overall wellness.