If you've got a spare toothbrush lying around in your bathroom drawers or cupboard, it could come in very useful out in the ...

The nemesis of clean-looking bathrooms everywhere, grout lines between tiles are notorious dirt magnets that standard cleaning tools struggle to reach. Your electric toothbrush is about to change ...

Harley Street dentist, Dr Richard Marques, further advises to "brush at a 45 degree angle to reach the teeth and gum line. Ideally you want to reach all surfaces of the teeth".