Discover 50 Super Weird Historical Facts 2 years ago Prev Article Next Article Prev45 of 51NextUse your ← → (arrow) keys to browse Fact 44: In ancient Rome, urine was used as a cleaning agent due to its ammonia content. It was collected and applied to clean clothes, floors, and even teeth. Prev45 of 51NextUse your ← → (arrow) keys to browse Facebook Prev Article Next Article