The present invention provides an insecticidal composition comprising of at least one insecticidal compound with effective knock-down action selected from among group (A) comprising of imidacloprid, acetamiprid, thiamethoxam, thiacloprid, nitenpyram, dinotefuran, clothianidin, abamectin, emamectin, emamectin benzoate and fipronil, and at least one insecticidal compound with effective long-term action selected from among group (B) of insect growth regulators comprising of benzoylphenyl urea (BPU) compounds selected from among novaluron, lufenuron, hexaflumuron, triflumuron, diflubenzuron, chlorfluazuron, flufenoxuron, noviflumuron and teflubenzuron. Optionally, said insecticidal composition may further contain excipients and/or additives and/or surface active agents. Further provided is a method for insect control, comprising of applying at least one insecticidal compound with effective knock-down action selected from among group (A) comprising of imidacloprid, acetamiprid, thiamethoxam, thiacloprid, nitenpyram, dinotefuran, clothianidin, abamectin, emamectin, emamectin benzoate and fipronil, and at least one insecticidal compound with effective long-term action selected from among group (B) of insect growth regulators (IGR) comprising of benzoylphenyl urea (BPU) compounds; to a crop, agricultural product, plant matter, animal or locale.L'invention concerne une composition insecticide qui comprend au moins un composé insecticide à effet mortel, sélectionné dans le groupe (A) comprenant les composés suivants: imidaclopride, acétamipride, thiaméthoxam, thiaclopride, nitenpyram, dinotefurane, clothianidine, abamectine, émamectine, benzoate d'émamectine et fipronil; et au moins un composé insecticide comportant un effet à long terme, sélectionné dans le groupe (B) des régulateurs de croissance d'insectes comprenant: les composés de benzoylphényl urée (BPU) sélectionnés dans le groupe constitué par novaluron, lufénuron, hexaflumuron, triflumuron, diflubenzuron, chlorfluaz