Noflex Digestor reacts with anaerobic sludge and water to neutralize sulphide odours (within about 20 minutes) and releases proteins that encourage the growth of aerobic bacteria; by-products of this reaction include sodium carbonate which protects the system against chlorine shock. The average use in a holding tank is flush down any head one cap-full of Noflex per person per day to treat black water and completely eliminate odors! This product is eco-friendly and contains no organic chemicals. Available in individual bottles or cases of 12.                                Fresher Water - Greener World