I believe the fix for that is to chuck a bucket of water through it once in a while.
My reference for the opposition to the urinals from plumbers came from this Wired article, iirc.
My reference for the opposition to the urinals from plumbers came from this Wired article, iirc.
But they stink, and do have issues with crystallization of urine, and that's why I saw them ripped out after a year or two everywhere they got installed.
Like Buckminster, conspiracy theories are a lot more palatable reason for why your idea got shot down than it just didn't work well in real life.