Insects are one of the main pests of stored grains and their by-products. The need to control them until their total elimination leads to an incorrect use of chemical insecticides. An ecologically safer alternative is the application of secondary plant metabolites for their control. The authors studied the repellent and/or insecticidal activity of low polarity metabolites isolated from three native species: Merremia dissecta (Jacq.) Hallier f., Lepidaploa...