I think they were talking about copasure, the capsule, not minerals. It's strictly copper. I have to use a mineral mix for both sheep and goats because I have both but I now copper bolus my goats with the copasure stuff... Every 4 months .Never use a SHEEP and GOAT mineral mix. Sheep cant have nearly as much copper as goats. Sheep loose mineral mixes typically max out under 50 ppm. While a good Goat mineral mix will max out around 1200 ppm. So never use a sheep mix for goats. Always better to use a cattle mix.