Drain Opener · Specially formulated to unblock drains without the use of sulphuric acid, which is highly corrosive and difficult to handle. · Clears drains fast and effortlessly · High specific gravity means that it is heavier than water and can sink through standing water down the U-bend to the blockage · Dissolves food waste, hairs and loosens grease · Will clear blocked and slow-running sinks, basins, bath/shower plugholes, and pipes effortlessly · Will not damage septic tanks, pipework or plastic drums