As a result of rinsing away scraps of food, grease and oil often form extremely stubborn blockages in the kitchen. . HG Hagesan Kitchen Drain Unblocker has been specially developed to clear these HG Kitchen Drain Unblocker is a professional product which works on the basis of specially selected natural enzymes and microbes and is therefore fully biodegradable and absolutely safe for all types of drains and septic tanks. . In fact using HG Kitchen Drain Unblocker will actually boost the bacteria culture in septic tanks. In addition to clearing blockages, HG Kitchen Drain Unblocker has special ingredients which help to prevent blockages from forming and keeps unpleasant odours at bay.