This regulation establishes an exemption from the requirement of a tolerance for residues of lytic bacteriophage active against Xanthomonas citri subsp. citri that are produced in Xanthomonas citri subsp. citri in or on food commodities included in the fruit, citrus groups 10 and 10-10, when used in accordance with label directions and good agricultural practices. OmniLytics, Inc. submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting an exemption from the requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of bacteriophage active against Xanthomonas citri subsp. citri in or on food commodities of the fruit, citrus groups 10 and 10-10 under FFDCA.