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The essential oils of six plant species [peppermint, Mentha piperita, and bergamot mint, Mentha citrata (both, Lamiales: Lamiaceae); blue gum, Eucalyptus globulus (Myrtales: Myrtaceae); lemongrass, Cymbopogon citratus, and khus grass, Vetiver zizanoides (both, Poales: Poaceae), and turmeric, Curcuma longa (Ziniberales: Zingiberaceae)] were screened for repellent, larvicidal and pupicidal activities against the housefly, Musca domestica L. (Diptera: Muscidae). Subsequently, emulsifiable concentrate (EC) formulations of the two most effective oils were prepared and tested in the laboratory as well as in the field. In repellency bioassays, M. piperita (RC₈₄, 61.0 µg/cm²) was found to be most effective, followed by E. globulus (RC₈₄, 214.5 µg/cm²) and C. citratus (RC₈₄, 289.2 µg/cm²). Formulated M. piperita and E. globulus showed RC₈₄ values of 1.6 µg/cm² and 4.1 µg/cm², respectively. Formulated M. piperita …