Everything about Fumigation totally explained
Fumigation is a method of
pest control that completely fills an area with gaseous
pesticides to
suffocate or
poison the pests within. It is utilized for control of pests in buildings (structural fumigation), soil, grain, and produce, and is also used during processing of goods to be imported or exported to prevent transfer of
exotic organisms.Structural fumigating techniques differ from
building to building, but in houses a
rubber tent is often placed over the entire house while the pesticides are being released into the residence. This
concentrates the
gases and prevents them from escaping and doing harm to people in the
neighborhood. During this time the residents of the house must find an alternate residence for up to a
week depending on the fumigant used, which in turn depend on the severity of infestation and size of the house.
Methyl bromide was among the most widely used fumigants until its production and use was restricted by the
Montreal Protocol due to its role in
ozone depletion.
Widely used fumigants include:
Fumigation is a hazardous operation, and generally it's a legal requirement that the operator carrying out the fumigation operation holds official certification to perform the fumigation.
Fumigation usually involves the following phases. First the area to be fumigated is usually covered to create a sealed environment; next the fumigant is released into the space to be fumigated; then, the space is held for a set period while the fumigant gas percolates through the space and acts on and kills any infestation in the product, next the space is ventilated so that the poisonous gases are allowed to escape from the space, and render it safe for humans to enter.
The correct ventilation of the area is a critical safety aspect of fumigation. It is important to distinguish between the pack or source of the fumigant gas and the environment which has been fumigated. While the fumigant pack may be safe and spent, the space will still hold the fumigant gas until it has been ventilated.
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