It is perhaps stating the obvious to say that drains like everything else need maintenance. Grease, grime, silt, hair, all sorts of things that children put down the sink, etc. can all cause problems with a drain. In the end, the pipe just cannot take any more any the result- flow of fluids is reduced and a blockage comes next When a drain, or worse still, a sewer is physically damaged, problems naturally follow. Blockages are the usual result and this can be a major problem. The root cause (p