Fuente: WIPO "apiculture" This invention generally relates to a deep eutectic system (DES) formed from at least one terpenoid and at least one terpenoic acid, wherein the at least one terpenoic acid is present in a gymnosperm exudate. More specifically, but not exclusively, it relates to a DES formed from a hydroxylated terpenoid such as menthol or thymol, and a terpenoic acid present in pine rosin, such as abietic acid. Biofouling control, antimicrobial, horticultural, viticultural, and arthropod and/or pest control compositions comprising the DES are also provided, as are compositions for releasing a volatile compound.