Many plant species synthesize active ingredients with insecticidal activity as a part of their own defense mechanism against various pest. These active ingredients represent new means of crop protection and a pest management alternative. Confused flour beetle (Tribolium confusum L.) is one of the most harmful pests of stored grain and final products. The aim of this study was to investigate the efficacy of aqueous and ethanol extracts of Dalmatian sage (Salvia officinalis L.), ginger (Zingiber officinale Roscoe), clove (Syzygium aromaticum L.), absinthium (Artemisia absinthium L.), tomato (Lycopersicon esculentum Mill), Dalmatian pyrethrum (Tanacetum cinerariifolium /Trevir./ Sch. Bip.), garlic (Allium sativum L.) and Scots pine (Pinus sylvestris L.) on the Tribolium confusum L. larvae. The study included eight treatments with aqueous extracts and 10 treatments with ethanol extracts, each treatment consisted of four replicates, and each replicate of 10 Tribolium confusum L. larvae. Experiments with aqueous extracts were monitored 24, 48, 72 and 192 hours after the treatment, ethanol extracts 1, 2, 3, 4, 5, 10, 22, 32 and 100 hours after the treatment, where the number of dead larvae was determined. The highest efficacy of aqueous extracts was achieved in ginger and absinthium treatment (27,5 %) and among ethanol extracts, the highest efficacy was observed with Dalmatian pyrethrum (30 and 27,5 %).