A multi-pronged approach of grazing management, regular monitoring, resistance testing and strategic drenching, has been the key to managing worm burdens in the 20,000-head flock at Kurrajong Park, Coolah. Livestock manager at the Paspaley Rural property, Shane Curtis, believes that staying on top of worm populations has been the key to reducing the number of drench applications each year while also keeping the Merino flock healthy and profitable.