Synthetic insecticides have demonstrated effectiveness and efficiency in the control of C. maculatus. But they have many limitations ranging from: resistance development by organisms, food safety concerns from residual activity, environmental contamination and increasing costs of application . Hence there is a need to source for alternative pesticides from locally available plants which are safer, ecofriendly and less expensive. Clove (Syzygium aromaticum) (L) Merrill and Perry (Myrtaceae) is a tree with aromatic flower buds. It is native to the Maluku Islands in Indonesia , however it is domesticated and cultivated widely in Africa, where it is used as a spice. The vernacular name in southwest Nigeria is 'Kanafuru'. Clove possesses insecticidal and fungicidal properties and can also be applied for post-harvest protection and food storage . This potential has hitherto been underutilized. Therefore, this study was conducted to evaluate the potential of Syzgium aromaticum oil (clove oil) as a safe alternative to synthetic agrochemicals currently used for the control for Callosobruchus maculatus, the principal post-harvest pest of cowpea (Vigna unguiculata).