CLR is a strong base so it works well when trying to dissolve a base (chemistry law "likes dissolves likes").
My favorite acid to use is muratic acid (mix of sulfuric and hydrochloride) which is brick cleaning acid. If your unsure of the substance staining the bottle, which I am all the time...
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Ideal Dairy Farm use to be owned by my family.
I found this "Third Quart" bottle and looking for a quart bottle
It would be a real nice sentimental epicene to add to my collection
I appreciate this. I found an orangeburg sc Chero bottle a couple days ago. If anyone needs it for their collection let me know cause I'm going for just NC