The millions of mice in a NSW town are 'back with a vengeance' locals say. Locals in a rural Australian town overrun by mice say the New South Wales state government's plan to supply poison to treat the problem may not be enough. Trundle Central School principal John Southon told Australian breakfast show Today the problem is getting worse and more needs to be done to get a handle on the infestation. Supplied Residents of a rural Australian town overrun by mice say the New South Wales state government's plan to supply poison to treat the problem may not be enough.