Stored foodstuffs are often attacked by a variety of pests. Trogoderma granarium Everts is one of the most serious pests of food stores. In this context, our study concerns the evaluation of the insecticidal activity of two essential oils: Artemisia herba alba and Rosmarinus officinalis on Trogoderma granarium. The results showed that both tested essential oils were effective, and their efficacy is dose-dependant. In terms of contact insecticidal activity, lethal doses show that R. officinalis essential oil is the most effective, with an LD50 of 3.6 µl/ml and an LD90 of 15.1 µl/ml. On the other hand A. herba alba has an LD50 of 3.98 μl/ml and an LD90 of 50.11µl/ml. Both essential oils also have an inhalation insecticidal potential, quite high for R. officinalis with an LD 50 of 3.16 µl/ml and an LD 90 of 30.19 µl/ml. In contrast, A. herba alba has an LD 50 of 21.87 μl/ml and an LD 90 of 67.60 µl/ml. In addition, R. officinalis showed a more effective and permanent action than A. herba alba.