This regulation amends an exemption from the requirement of a tolerance to allow for residues of 1,1-difluoroethane (CAS Reg. No. 75- 37-6) when used as an inert ingredient (aerosol propellant) in bird repellent pesticide products applied to growing crops and raw agricultural commodities after harvest and to animals. Pyxis Regulatory Consulting, on behalf of Avian Enterprises Limited LLC, submitted a petition to EPA under the Federal Food, Drug, and Cosmetic Act (FFDCA), requesting an amendment to an existing requirement of a tolerance. This regulation eliminates the need to establish a maximum permissible level for residues of 1,1-difluoroethane when used in accordance with the terms of the exemption.