Fumigation is the process by which a lethal chemical is released into an enclosed area to eliminate an infestation of pests. This process may be used in order to rid a home or other structure of insects such as termites or roaches, but it may also be used when products are being processed for export or import in order to rid the goods of exotic pests and organisms.
TYPES OF FUMIGATION
Container fumigation is the treatment of a commodity or the container itself to eliminate the risk of pests or disease from entering or leaving the country or state.
A container can be fumigated in two ways:
Pressure decay fumigation involves the pressure testing of the container to value. If the container can maintain that value for a time duration then the container is classified as “Gas Tight” and therefore may be fumigated without plastic sheets.
Plastic sheet fumigation is when no pressure decay is used or the container fails pressure decay. The container is covered with a gas proof fumigation sheet and sand snaked around all of the edges to achieve and maintain a gas seal.
It can be fumigated either with Aluminium Phosphide or Methyl Bromide.
In case of Aluminium Phosphide fumigation, the Aluminium Phosphide in the form of sachets containing granules or tablets must be applied in such a manner that it disperses quickly & distribute the Phosphine gas concentration equally. After completion of required exposure period, container must be ventilated & declared as a gas free.
Container fumigation with Methyl Bromide involved installation of fumigation equipment such as Distribution tube, Fan & Sampling tubes at each level i.e. Top back, Middle center & front base. The necessary connections are made such as Vaporizer, Applicator etc. & the required amount of gas is released and monitored during a given exposure period against government specified fumigation norms. After successful fumigation the
container is degassed & declared as gas free.
Commodity fumigation is the treatment of product by a gas, chemical or other process to eliminate the risk of pest infestation.
A commodity can be described as anything from grain to personal effects imported or exported from on country or state to another.
The commodity can be by itself (loose or LCL – loose container load), in container (FCL – full container load), silo or ship.
Warehouse fumigation involves fumigating the commodities either in loose conditions or packed in bags or other packing, stored in godowns, warehouses, storage which is stationary. Separate stacks are fumigated and then covered with plastic covers (tarpaulins) as having GSM as recommended by the Plant Protection and Quarantine Authority of India and making them gaslight by sealing them using sand snakes.
This is very vulnerable to powder post beetle and other wood boring pests. This pest is very dangerous & difficult to manage and if any infested WPM is stored near any wooden articles can damage & cross-infest creating tremendous damage to the wood. As per guidelines of ISPM – 15, WPM should be fumigated with Methyl Bromide in compliance with IPPC mark as specified in ISPM-15.
The treatment to control the pest of WPM we follow the guidelines by ISPM – 15 which is recommended by almost all the countries in the Globe.