Methyl Bromide Containers Methyl bromide is an effective and versatile fumigant. The most important of these, is its ability to penetrate quickly and deeply into sorptive materials at normal atmospheric pressure. Also, at the end of a treatment, the vapours dissipate rapidly and make possible the safe handling of bulk commodities. Another important property is the fact that many living plants are tolerant to this gas in insecticidal treatments. Methyl bromide is nonflammable and non-explosive under ordinary circumstances and may be used without special precautions against fire.