She sometimes sprays a few spritzes of scent onto her throw pillows. (It's a good idea to test the spray on the back of the pillow to ensure it doesn't leave an oil spot.) She spritzes just the edges of a pillow, not the center, where people may rest their heads.

WSJ: Tricks of the Trade: A Well-Scented Home

Rubbish and graffiti often go hand-in-hand but spray painting pavements could stop people littering - at least that is the theory a Cardiff student is putting to the test.

BBC: Footprint art on pavements to tackle litter problem