The pink hibiscus mealybug Maconellicoccus hirsutus is a serious pest on the ornamental plant Hibiscus rosa sinensis at Ismailia governorate and elsewhere . So, the comparative effects of six commonly used insecticides [four nonconventional pesticides ; Biofly, Biovar, Bioranza and  Orange oil & two conventional pesticides Admiral (pyriproxyfen) and Cidial (phenthoate)]. They applied under field conditions on the population(s) of the pink hibiscus mealybug, Maconellicoccus hirsutus and its natural enemies of the encyrtid parasitoid Anagyrus kamali and the coccinellid  predators Scymnus coccivora  & Cryptolaemus montrouzieri. Results showed that the least reduction value was recorded by Biovar, Bioranza, Admiral and Orange oil on the mealybug population(s) and their natural enemies. The highest effect was occurred by cidial treatment. So, biocides are recommended for using in the control of this insect pest for its least effect on the natural enemies of these pests.