Safener complexes comprising cloquintocet acid, or a salt thereof, and an amine-containing polymer or oligomer as well as compositions comprising these safener complexes are provided. Also provided are methods of controlling undesirable vegetation in a crop, comprising applying to vegetation or an area adjacent to the vegetation or applying to soil or water to prevent the emergence or growth of the undesirable vegetation in a crop, a safened herbicidal composition comprising a herbicide and a safener complex comprising cloquintocet acid, or a salt thereof, and an amine-containing polymer or oligomer.