Back to Our Exceptional Poles Exceptional Preservatives Exceptional Treatment Processes		View Larger After the “Whitewood” is sorted, it is sent to the dry-kilns for “Conditioning.” “Conditioning” is the process by which the Whitewood is heated in order to lower the wood's natural moisture content and make room for the preservative. “Conditioning” also sterilizes the Whitewood. Back to Treatment Processes Photos More Steps Timber Barkies Peeling the Whitewood Conditioning Framing Preserving NationWide’s poles are conditioned in kilns that are computer controlled to ensure that the Whitewood is consistently conditioned to the appropriate moisture content. The Whitewood is stacked on railcars and pushed into dry-kilns. Depending on the class, length, and time of year, Whitewood is conditioned in the dry-kilns for 3 to 4 days.