what is actually "bad" about urine?
I think it is considered a waste product. But don't quote me.
Actually urine is a product used in industry. The medication Premarin is made from PRegnant MAre uRINe. Urea and ammonia are extracted from animal urine, urea used in fertilizer and even hand cream (check the ingredients), and ammonia is used in toothpaste (the Greeks and Romans used urine to whiten their teeth!)
I believe any ammonias used in consumer products are manufactured in chemical plants, not in equine bladders.