Protect trees from injuries. Remove infested trees and branches immediately, but do all other pruning during December and January when adult beetles are inactive. When extensive limb removal is planned for reasons other than dead wood removal or to eliminate hazardous trees, space the trimming over several years. Otherwise, the tree may not have adequate foliage to produce the food it needs to maintain good health. Also, extensive pruning suddenly exposes previously shaded bark to direct sunlight, which can result in sun scald cankers that are susceptible to borer attack.
Sanitation is critical for reducing beetle numbers.
Until the wood dries below a critical level, it remains suitable and highly attractive to ovipositing beetles. Anything that can be done to speed the drying process, such as cutting and splitting wood, helps to reduce the length of time the wood can support beetle development. If the wood is already infested, it should be treated or destroyed. Chipped eucalyptus makes an excellent mulch. Alternatively, remove the bark from felled logs or solarize the wood by placing it in a sunny location for 10 to 12 weeks and covering it with ultraviolet-resistant plastic.