ELM LEAF BEETLE TREATMENT IN ACTION! The Elm Leaf Beetle (ELB/Pyrrahalta luteola) is an important pest that can often be found in Elm trees. Orange City Council and other surrounding Local Government areas are endeavouring to control the pest and is encouraging households to do the same. One control option is trunk injection which is considered a professional treatment. The insecticide is injected directly into the trunk of the tree before it then transports the chemical to the leaves where it k