Composition sheets for Bio Actif & Bio Foss products In accordance with regulations, you will find below the official composition sheets for our Bio Actif & Bio Foss products, carefully arranged in ascending order to facilitate your search. 2002805 Septic tank biological activator 6 months Download 2003805 Septic tank biological activator 12 months Download 2004805 Septic tank unblocker & reactivator 500 g Download 2004905 Stain & odor remover 500 ml Download 2008805 Microbead activator for septic tanks 500 g Download