Oh, if you're in a hard water area (like many parts of the UK), it really helps to use salt! Where I grew up we never used salt because the water wasn't hard, b

Oh, if you're in a hard water area (like many parts of the UK), it really helps to use salt! Where I grew up we never used salt because the water wasn't hard, but in London (for example) it makes a massive difference. All dishwashers seem to have a reservoir for salt but of course people only tend to use it in regions where it's needed.