U.S. (ASTM) and international standards (International Standard for Phytosanitary Measures (ISPM)) recommend heat treatment, or fumigation with methyl bromide, for the preservation of wood-derived packaging storage materials, including wood pallets. For more information, including certification to these standards, refer to Standard Practice for Treatment and/or Marking of Wood Packaging Materials (ASTM D 6253-10) and Guidelines for Regulating Wood Packaging Material in International Trade (ISPM 15).