The court heard that both brothers have previous convictions for motoring offences, including drink driving.

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Mrs Hunt uses materials including drink cans, takeaway containers, computer parts and babies' dummies.

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Police said there was a 57% reduction in "youth-related annoyance" compared to the three months before the trail, and a 51% fall in all anti-social type incidents, including drink-related offences, criminal damage and noise nuisance.

BBC: NEWS | UK | Wales | South East Wales | Night experiment cuts youth trouble