Let’s just say that once upon a time, there was a bunch of pot plants in a backyard and a litter of feral cats were living in them. And let’s just say that people were very, very happy with those plants.
So I’d check cat urine, too. Maybe the little buggers could sell it and start paying board!
Urea. Used as a nitrogen-supplying fertilizer, much like the stuff you put on a lawn.
No idea whether there’s anything more going on with the cats+plants than simple fertilizing.
when i had a compost pile (and a husband) he used to make a point of pissing on it. apparently it’s a common practice so i’m not surprised it works straight up.