I have recently moved into a pre 1930's property and the last couple of weeks noticed smelly sewer waste blocking up into a drain at the rear of the property. i called out dyno-rod and he put down a pressure pipe (approx.24mtres) into the drain but the would not clear, he then cut open a hole on the main toilet pipe and repeated the process but it still didn't clear. It's becoming a health hazard especailly with two young kids, what can i do????? 
