The objective of this research was to evaluate the effectiveness of absolute essential oils (EOs) of Clove buds, Syzygium aromaticum (L.); Patchouli, Pogostemon cablin and Geranium, Pelargonium graveolens as fumigants for killing adults and internal larvae of three stored grain insects, Sitophilus oryzae (L.), Rhizopertha dominica (F) and Callosobruchus maculatus (F). Obtained results declared that the mortality % was increased with increasing of conc. and exposure period. For complete death, S.oryzae adults should be fumigated by conc. 10% for 2 days with clove EO, 70% for 2 days with patchouli EO and 50% for 3 days with geranium EO. Fumigation by conc. 40% for 1 day, 50% for 2 days and 25% for 2 days with clove, patchouli and geranium EO respectively were sufficient to cause 100% Callosobruchus maculatus adult mortality. For complete death of Rhizopertha dominica, adults should be fumigated by conc. 1% for 2 days with clove EO, 3% for 2 days with patchouli EO and 2% for 2 days with geranium EO. The fumigation with Lc₉₀ for tested EO was able to reduce the F1-progeny of R.dominica by 72.7, 70 and 75.7% with clove, patchouli and geranium respectively. While, the three EOs were ineffective against internal larvae of C.maculatus. Clove EO were the most effective against internal larvae of S.oryzae in which give 53% reduction in F1 progeny compared with geranium which cause 40% reduction while Patchouli EO was ineffective.