This study evaluated the impact of extreme temperatures on all life stages of the Mediterranean flour moth, Ephestia kuehniella Zeller (Lepidoptera: Pyralidae), the Indian meal moth, Plodia interpunctella (Lepidoptera: Pyralidae) and the saw-toothed grain beetle, Oryzaephilus surinamensis (L.) under laboratory and field conditions. Individuals were exposed to cold temperatures ranging from 5 °C to −18 °C and heat temperatures from 30 °C to 55 °C, with exposure durations varying from minutes to several days. Complete mortality was observed at −10 °C and −15 °C for cold treatments, and at 50 °C and 55 °C for heat treatments, regardless of exposure duration. These findings suggest that extreme temperatures can be reliably applied to eliminate infestations in stored commodities.
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