My bathtub has never been whiter!! Works great on glass shower doors too- no more soap residue! (oh i need this... having bright red hair = pink stained shower that no cleaner or amount of scrubbing has been able to take care of yet :p) Martha Stewart's Tub Scrub--works better than any other cleaning product to get off hard water and soap residue
How to clean a toilet. Each week, pour 1 cup of baking soda into the bowl to keep it fresh. And finally, once a month pour a half-gallon of white vinegar into the bowl to keep it ring-free. Let it soak overnight before flushing.