Fumigation of Wooden Pallets and other packaging material as per ISPM-15 the National Standards for Phytosanitary Measures (NSPM) -11 defines fumigation as application of any chemical in a gaseous state in a gas tight enclosure to kill insect and other pests. According to the National Pest Control Association of America (NPCA), fumigation is the introduction of a toxic gas into a space in a high enough concentration so that the gas fills all areas to kill target insects. Methyl Bromide and Phosphine are the two most common fumigants used for treating raw commodities, processed food and wooden packaging material.