Studies were conducted to develop strategies to control and limit the spread of the pink hibiscus mealybug, Maconellicoccus hirsutus (Green).  Foliar applications of chlorpyrifos, acetamiprid and fenoxycarb against pink hibiscus mealybugs on red ginger flowers, Alpinia purpurata (Vieill.) K. Schume, demonstrated that chlorpyrifos was the most effective insecticide evaluated; more than 35 inches of rain fell during the study, and the microencapsulated formulation of chlorpyrifos was efficacious for 35 days as compared with the wettable powder formulation which was efficacious for 21 days.  Acetamiprid had minimal activity 10 days after treatment, and fenoxycarb, an insect growth regulator, was ineffective.  Hot water efficacy trials showed that pink hibiscus mealybugs eggs were the most resistant stage to heat; at 47, 48 and 49^o C, the probit 9 estimations were 74.2, 30.3 and 17.7 min, respectively.  In confirmatory tests, no egg survived treatments at 47, 48 and 49^o C for 52 (n=2241), 24 (n=2390), and 14 min (n=1168), respectively.  Hot water dips at these temperatures and durations are promising postharvest quarantine treatments to effectively surface disinfest commodities of the pink hibiscus mealybug.  Ionizing irradiation was another alternative postharvest disinfestation treatment for pink hibiscus mealybug; overall, radiotolerance of the mealybugs was found to increase with maturity.  At 100 Gy pink hibiscus mealybug eggs, crawlers and nymphs were controlled despite living for much longer periods than unexposed individuals.  A dose of 250 Gy was sufficient to control adults, because no eggs produced by 3,093 irradiated adults eclosed.  The minimum dose required for quarantine security is between the tested doses of 100 and 250 Gy.