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  #8  
Old 03-20-2012, 12:50 PM
purplehorseshoe purplehorseshoe is offline
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Join Date: Jun 2009
Location: Texas, USA
Posts: 9,425
Option #1
Vinegar. Cheap-ass white vinegar, whichever store brand is lowest dollar.

Option #2
Ammonia. Downside: smells like cat piss. Do not mix with bleach under any circumstances ever.

Option #3
I had a box of those fizzy effervescent denture-cleaning tablets left over from when I had a retainer. (Ohhhhh ... that was a long time ago. Ick.) Anyway, once I unearthed it, I went through it rather rapidly and recently bought a fresh box. Perfect for cleaning those funny-shaped vases that are hard to scrub. Good for mineral and/or soap scum deposits.

Option # 4
Move to a place with better water and a better dishwasher.