Continuously and uninterruptedly release this amazing fragrance into the environment through our new technology called Continuous Microdifussion, allowing pure perfume to go directly into the air, not containing unnecessary and harsh chemicals like aerosol propellants. The fragrance stays in the air with the same intensity 100% of the time! Manufactured in accordance with International Fragrance Association (IFRA) standards. Low levels of Volatile Organic Compounds (VOC): meets US Environmental Protection Agency (EPA) and California Air Resources Board (CARB) VOC regulations. Non-flammable. When using as HVAC unit it is installed near heating, ventilation and air conditioning ducts (HVAC) to dispense fragrance on the air through the system.