This regulation establishes an exemption from the requirement of a tolerance for residues of the biofungicide, Bacillus subtilis MBI 600, in or on all food commodities, including residues resulting from post-harvest uses, when applied/used in accordance with good agricultural practices. Becker Underwood, Inc. submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting an amendment to expand the existing exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of Bacillus subtilis MBI 600 in or on all food commodities.