BENEFITS- Copper is an essential trace mineral that cannot be formed by the human body so must be ingested from dietary sources every day. According to the World Health Organization, 1-3 milligrams per day of copper are required to prevent any symptoms of deficit. Various health and nutrition organizations around the world have set dietary reference values, highlighting the importance of copper as part of a balanced diet. Copper supports over 50 enzymatic reactions that take place in your body on a daily basis. This supports a healthy metabolism. INSTRUCTIONS FOR CLEANING - Do not use a coarse scrub to wash the inside of the bottle as it will tend to scrape away copper from the bottle. Use some lemon juice and hot water in bottle and shake it well allow it to stand for a few minutes and then wash off with plain water. Outside of the bottle there is no requirement to use scrubber/chemicals.