Bio-control uses the natural enemies of leafy spurge (Euphorbia esula) to control and reduce its population. In Manitoba, the flea beetles of the Aphthona genus have shown the most success in controlling leafy spurge. It is the Aphthona larvae that do the most damage by feeding on the roots of leafy spurge plants, causing them to weaken and become more susceptible to other controlling agents such as disease, grazing and herbicides. Bio-control is useful in areas where landowners may be limited by the type of control (e.g. herbicides).