Yes, piss turns to ammonia. Don't know if it being sealed up like that would make any difference.Does that stuff ever go bad? Who would like to test one of the early ones? Anyone?
Woody
As a locksmith I’ve gone into many houses where people were evicted and found LOTS of weird things left behind, a few years ago we came across an old man who was living in the garage of his home and was being evicted and he had several bottles and jugs of urine but not that much !! I believe the strangest thing I’ve found is 4 times people left behind false teeth 
