Duce, a High Surfactant Oil Concentrate (HSOC), combines methylated seed oils (MSO) and nonionic surfactants (NIS) in one container. Designed for use with herbicides that require an oil or surfactant, Duce is a 60/40 MSO-based product, compatible with multiple tank mix partners. It is a soy oil-based product that spreads better than a standard MSO. Duce also helps improve spray tank clean-out.