I have successfully used Pat Colby’s mix recommendation in her book “Natural Goat Care”
I now offer all ingredients from the mix as free choice . Copper sulphate, dolomite, seaweed meal, yellow sulfur.
I also provide bicarb soda. I have used this for about 6 years and have had good results, I did use copper bolus 1 year and lost 3 goats to what I believe was liver fluke (or bleeding from the bolus). They were on a new pasture, where cows had been after having access to the creek and was a very wet year. Didn’t provide copper in the mineral mix as usual that year as I didn’t want to overdose them. I have gone back to my usual mix and added home made herbal treat balls to help with anything that needs attention like wet weather worm load increases or birth immune boosts.
Would love to hear others experience with bolus as well. Great to see more goat lovers in here🥰