First, it came from China. Some people say it took days. Mine took TWO MONTHS. So, there goes the warranty. If you read directions first, you fill part way. The tablets are NOT the size of quarters, more like a dime. Three tries later (first, one tab; second, two tabs...), I used three tablets. FINALLY, I got a little bath scum, mold(?) off the caulking of tub...no effervescence.
That's ALL I needed it for, really. It did NOTHING like advertised. I thought I would try it on a Revere Ware copper pan bottom, didn't touch it. There IS one positive. The BOTTLE! I threw out the tablets and cleaned the crap out of the bottle, and will use it for something else. LOVE upside down spray!
Bottom Line: No, I would not recommend this to a friend
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