I would never feed Purina mineral - it is nearly 50% salt, and the salt acts as a limiter. I use either ADM goat mineral or Essential goat minerals, and my girls love both. Sweet Lyx Meat Maker is another good mineral. I used them for quite a while until the company I was ordering them through became too unreliable. Others on here have said Manna Pro, Onyx, and several others I can't think of now.I'm almost out of my bag of purina loose minerals and wondering if I should get that again or look for another choice.
Are any of these places near you? They are all listed as being dealers for Golden Blend products on the Golden Blend website.