It is strongly advised that this be done only by professional fumigators. They can do a better job and the overall cost may be less. Methyl bromide may also be used, but it is not as practical under most farm storage conditions. Five days in a very tightly sealed storage are normally required for aluminum phosphide fumigation, depending on temperature. Methyl bromide may give control in 24 hours, but recirculation, which is difficult in most farm bins, may be required.
Fumigation is tricky and potentially dangerous.
It should be done professionally unless the producer knows how to do it right, has the equipment to do it properly, and is properly certified. For more information on grain protectants and fumigation, refer to the latest edition of the North Carolina Agricultural Chemicals Manual and follow all label directions. A properly managed grain storage operation rarely needs fumigation. When using any agricultural chemical, be sure that the intended use complies with current regulations and conforms to the product label. Be sure to obtain current information about usage regulations and examine a current product label before applying any chemical.