I love the cats...except for one thing.
Cat piss.
I've got one that is pissing in different spots and I don't know which one is doing it.
I can watch to see which cats are angry at the other cat(s).
That usually will detect the offender. Cats often do not appreciate the piss of another.
The thing of it is, cat piss is omnipotent!
The smell is pervasive.
The scent is inscrutable. Cryptic.
I smell it. It reeks. But I cannot for the life of me tell where the Hell it is coming from, and don't get me wrong.
I have an excellent nose for detecting smell by direction, but cat piss is so omnipresent that I can only detect its location by height, altitude, but not by North, South, East or West.
Unless I accidentally sit right smack down in it...
...and then detect it on my pants afterwards.