How does weather affect fumigation treatment?
ISPM 15 requires that the temperature be 52F or hotter in order to fumigate wood packaging. Cold temperatures render methyl bromide ineffective because the pests must have a high enough respiration rate for them to breath in the gas. The lower the temperature, the more gas and treatment time may be required to achieve the desired result. Methyl bromide comes as a liquid and must be heated to become a gas.
