The use of chemical pesticides to preserve food commodities is a global issue of concern due to their negative effect on
the environment and public health. In recent years, the European Union is trying to reduce their use, favoring alternative
or complementary approaches based on natural products. In this scenario, plant-borne essential oils (EOs)
represent valid options for Integrated Pest Management (IPM) programs. In the present study, the insecticidal effect of
eight EOs obtained from plants from different parts of the world, namely Mentha longifolia, Dysphania ambrosioides,
Carlina acaulis, Trachyspermum ammi, Pimpinella anisum, Origanum syriacum, Cannabis sativa and Hazomalania voyronii,
were evaluated against two stored-product insect species of economic importance, Prostephanus truncatus and
Trogoderma granarium. Simulating a small-scale stored-product conservation environment, an AG-4 airbrush was used
to spray maize and wheat with 500 and 1000 ppm of EOs, then T. granarium and P. truncatus were exposed to the stored
products and mortality was evaluated over selected time intervals (4, 8, and 16 h, and 1, 2, 3, 4, 5, 6, and 7 days). The
EO of C. acaulis exhibited high efficacy against P. truncatus adults at both tested concentrations by killing>97% of the
individuals exposed to treated maize within 3 days at 500 ppm. The EO of D. ambrosioides eliminated all T. granarium
adults exposed to 1000 ppm-treated wheat 2 days post-exposure. At this exposure interval, 91.1% of the exposed T.
granarium adults died on wheat treated with 1000 ppm of C. acaulis EO. The EO of M. longifolia at both tested concentrations
was the most effective against T. granarium larvae, leading to 97.8% mortality at 500 ppm after 3 days of
exposure, and 100% mortality at 1000 pm 2 days post-exposure. At 1000 ppm, the EOs of D. ambrosioides and P. anisum
led to 95.6 and 90% mortality, respectively, to larvae exposed to treated wheat for 7 days. Overall, our research shed
light on the poten