Slice a lemon in half and dip the cut side into a bowl of course salt. Then use the lemon like a scourer to polish pots and pans and remove burnt on food and grime. These handy home made wonders are also ideal for cleaning and sanitising stained chopping boards. Simply sprinkle a chopping board with coarse salt, then squeeze lemon juice onto the board, leave for a few minutes and then scrub with your lemon scourer.