2-Undecanone is widely used as an insect repellent, particularly effective against ticks, mosquitoes, and other arthropods. It is a key ingredient in various commercial repellent products, offering a safer alternative to synthetic chemicals like DEET. Its natural origin and low toxicity make it suitable for use on skin, clothing, and outdoor gear. Additionally, it is employed in agricultural settings to protect crops from pest infestations. Beyond its repellent properties, 2-Undecanone is utilized in the flavor and fragrance industry, contributing to the aroma of certain food products and perfumes due to its mild, fruity scent.