This unit of competency specifies the outcomes required to control by fumigation, organisms and organism activity that affect the health, safety or amenity of persons, commodities or environments in domestic, commercial, industrial and maritime situations. The unit covers developing a thorough understanding of client requirements; assessing the site; selecting methods, fumigants and equipment required to meet client requirements; and applying company procedures in order to perform the task. These work functions are conducted by teams of at least two people in compliance with state and territory health and safety legislation.Fumigants are most frequently applied by pest technicians to meet quarantine conditions for exported or imported goods, but are also applied in commercial grain handling and storage environments.This unit is not intended for use in horticultural or agricultural situations involving the growing of crops.Fumigants are chemicals which at a particular temperature and pressure can exist in a gaseous state in sufficient concentration and for sufficient time to be lethal to insects or other animals, plants and seeds or other organisms. The fumigant is applied to a fumigation enclosure which is a space which has been made sufficiently gas tight to contain the fumigant at the required concentrations for the required time.Licensing, legislative, regulatory or certification requirements apply to pest management in some States. Relevant state and territory regulatory authorities should be consulted to confirm those requirements.Where required, the fumigator must meet the licensing requirements of the relevant Australian or international quarantine authority.