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Researchers say the end could be in sight for molluscicides. Sybil Ruscoe hears that scientists at the Universities of Plymouth and Southampton have discovered that slugs and snails choose what to eat via their dislike of certain smells, rather than preferred flavours - and that specially bred crops exuding certain scents could be the way to repel slimy pests. First broadcast on Farming Today, 1 June 2016.