In article ,
nestork wrote:

I would also be reluctant to disassemble the p-trap. Even though you
can get away with it most of the time, it's been my experience that the
rest of the time the p-trap will leak at the union fitting after having
been disassembled.

If that ever happens to anyone again, have your carpets shampoo'ed.

And, while the guy is there cleaning your carpet, ask him to use his
carpet extractor to suck out the contents of that p-trap.

The vaccuum motors used in carpet cleaning machines are much more
powerful than those used in ordinary vaccuum cleaners. I expect that a
strong wind up the drain pipe would carry even steel screw up and out of
the drain.

Or, at least, I'd try using a powerful vacuum before I took the p-trap
apart.

I always thought these were a good idea. Not sure that the whole thing
needs to be clear, but the clear removable ring-catcher is cool.

http://www.amresupply.com/part/PS616...CLEAR-CLEANOUT