On Mon, 02 Jan 2006 13:59:58 GMT, Stuart Noble wrote:

Although it is sold commercially as a drain cleaner, never use caustic
soda to open a drain. It will combine with the grease from soap or food
wastes to form an insoluble compound.

The soap it forms will always be water soluble

Quite. Considering that soap is *made* from caustic soda and oil.

--
Nigel M