Dirty Work Ahead

Our outdoor soil/sewage pipe is blocked again. Not quite completely but these are plumber's rods which have had quite a lot of use every few months. This time we've called in a drain man who should appear sometime today as we think there's something wrong with the system - the pipe does a sharp right-angle bend at quite a distance from the nearest access points. If he's not here soon I'll just do it myself and cure it for another few months.