Decent Mineral Mix 16/8 (2:1 ratio)

[Dave-Trinity-Farms]

Hey Nanno, I looked into the copasure boluses and you are right they are oxide based. But its ok because its slowly dissolving a little at a time. Being oxide based helps to prevent toxicity as well. So although most will pass through, they are still getting a daily amount. So in this case, being oxide base is preferred and safer.

http://theikga.org/copper_bolus_study_in_goats.html

Here is an interesting study I came across. There is a significant reduction in parasite egg count after bolusing.