Ancient Romans used urine as mouthwash. Urine contains ammonia, which is one of the best natural cleaning agents on the planet.
An unknown ancient civilization brought stones 150 miles to help build Stonehenge. An early European people known only as the Bell-Beaker civilization likely moved the bluestones which each weigh four tons to the Wiltshire, England monument sometime between 2600 and 1600 B.C. Experts aren’t sure why they would do this but theorize that the stones could have been used for their healing powers.