Ed Pawlowski wrote in
:

On Sun, 05 Aug 2012 12:34:30 -0400, "
wrote:


That's a good point. I've had toilet traps dry out and let sewer
gasses into the room. Antifreeze might help avoid that. I believe
propylene glycol has a pretty low vapor pressure, anyway.

We have an unused rest room at work and it would dry up every couple
of months. I poured coking oil in it and it has been that way for
about a year now.

The waterless urinals work because they have some kind of oil in the trap.

--
Best regards
Han
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