Or vinegar. With a coffee pod machine or whatever you can just dump half a cup of vinegar in the reservoir and run it through.
I’m not a chemist type but I think basic substances like baking soda are good for organic stains while acidic substances like vinegar are good for mineral stains. We have super hard water where I am, it’s full of calcium and leaves calcium deposits on everything. The calcium deposit is a perfect place for other stains like coffee stains to get stuck.
Or vinegar. With a coffee pod machine or whatever you can just dump half a cup of vinegar in the reservoir and run it through.
I’m not a chemist type but I think basic substances like baking soda are good for organic stains while acidic substances like vinegar are good for mineral stains. We have super hard water where I am, it’s full of calcium and leaves calcium deposits on everything. The calcium deposit is a perfect place for other stains like coffee stains to get stuck.