As a surface disinfectant, used at the right concentration and pH is effective against most vegetative bacteria, fungi, enveloped and non-enveloped viruses as well as Mycobacterium tuberculosis and bacterial spores if solution remains at high concentration. It is inactivated by organic substances. For sporicidal concentration: 1 part household bleach to 9 parts water; approximately 5,000 ppm free chlorine – good for 24 hours, then need to make fresh again.