No. Eradication is not the normal outcome of natural control since it is not in the agent’s best interest to eradicate its only food source. Long-term control, below an economic or environmental threshold, should be anticipated. The aim of the biological control programme is to reduce the occurrence Himalayan balsam on our river systems and areas with high conservation status. By reducing the occurrence of Himalayan balsam on rivers, this will reduce the impact threshold of the plant on native biodiversity.