The present investigation was directed to study the effect of some natural oils on the greater wax moth, Galleria mellonella L. five essential oils were testes against larvae (middle and late instars) and pupal stages of the pest. The tested oils were Lemon, Citrus limon; Camphor, Eucalyptus globules, Mint, Mintha spicata; Ginger, Zingiber ofifcinale and Thyme, thymus vulgaris. Toxicity results of oils against larvae (middle and late) instars as well as pupal stage of greater wax moth toxic indicated that mint and ginger were the most toxic oils. The other oils had low toxicity than these oils. The above natural oils were tested, in the line of trying to find out whether they can be used as insecticides against the pest.