Product Short Description: DIOCTYL SODIUM SULPHOSUCCINATE DOSS Product Description: Dioctyl sodium sulfosuccinate (DSS) is an anionic surfactant substance that traditionally has been recommended as a laxative and stool softener for a variety of vertebrates ranging from humans to rodents. DSS has been advocated for the same use in reptiles. Dioctyl sodium sulfosuccinate (DSS) is an anionic surfactant substance that traditionally has been recommended as a laxative and stool softener for a variety of vertebrates ranging from humans to rodents. DSS has been advocated for the same use in reptiles.