fogbuster® eco-drain cleaner + grey water additive is a uniquely formulated liquid gel containing a blend of natural cultures of friendly bacteria and fast acting enzymes. Use of this product will help eliminate and control blockage and odour problems caused by Fat, Oil and Grease (FOG) in drain lines and wastewater pipes. This product is a biological Grey Water Additive (GWA) that can be added to waste water-holding tanks and drain lines to break down organic waste such as emulsified fatty substances and sludge found in the systems of all ships, cruise liners, Superyachts, motor and sailing yachts and boats. It will help to reduce the waste volumes in grey tanks to reduce emptying frequency.