An effective insect growth regulator with low concentration in the form of an emulsion center (EC) works to combat white fly of all kinds by preventing hatching of eggs and disturb the growth and development of nymphs leading to death. It does not affect the nervous system of the insect and is specialized in certain stages in the life of the insect and not others and thus it is safe for the environment and vital organs. Effectiveness of the pesticide is shown during the first week after treatment and its effect on eggs and nymphs extends to 3-5 weeks.