To purify greasy sinks and pipes, pour down a pailful of boiling water
in which three or four pounds of washing soda have been dissolved. A
disinfectant is prepared in the same way, using copperas. Copperas is
a poison and should not be left about.
Leaks in Waste Pipes:: Shut yourself into a room from which the pipe
starts. Put two or three ounces of oil of peppermint into a pail of
boiling hot water and pour down the pipe. Another person who has not
yet inhaled the strong odor should follow the course of the pipe
through the house. The peppermint will be pretty sure to discover a
break that even an expert plumber might overlook.
The Examiner.