[Bsumme10]

I have a neighbor farmer that told me he has loose mineral in his barn (about 20 bags). The mineral is probably 10-12 years old. My question is...is it still good? Its been kept in a barn so kept dry just didn't know if over time it might lose its quality.

 

[Forthright]

Vitamins tend to be very labile and degrade quickly. My formulator friends say the shelf life is 90-120 days on vitamins and minerals, although I doubt most producers feed out that quickly. I would think 10-12 years makes the mineral pretty worthless.