Citric Acid Powder 1 lb. / 16 oz. ANHYDROUS I Fine Granules I 100% Natural I Food Grade Lemon Salt I Flavoring Agent I Non-GMO I FCC/USP I Grade A I

I used this to clean my glass shower door. I mixed one part citric acid with about two parts water to make a gritty paste, coated the glass, and wrapped it in plastic wrap. Left it overnight, and when I came back in the morning, scrubbed and rinsed the glass, it was almost clean! I have tried everything and mainly the plastic wrap saved the day.

Came in a sealed plastic bag that can be resealed which is good. Also this was the smallest bag that I could find and fit my needs. Only use it to clean my distiller which I don't use that often. But the product can be used on other things which I will try. Satisfied with the product.