3#3. Removing water stains on fixtures with the acid from lemons
If your chromed bathroom and kitchen fixtures have hard water stains that won’t come off with regular cleaners try cutting a lemon in half and scrubbing the surface with the lemon halves.
#4. Washing nasty toothbrush holders and soap dispensers in the dishwasher
The toothbrush holder can usually just be put into your dishwasher or you can rinse it out with some really hot water and dish soap and then scrub out the gunk at the bottom.