Unfortunately, however, its use was

Unfortunately, however, its use was suspended after only one year (1970) because live larvae of fruit fly were discovered on a certified shipment at the port-of-entry inspection. Export treatment of Hawaiian papaya then switched over to ethylene di-bromide (EDB) fumigation, another effective alternative treatment for fruit flies. Due to the possible hazard to human health, EDB itself was phased out in the first half of 1980s. Vapor heat thus revived as a non-hazardous tool of disinfestations and the various modes of its application have been investigation.