In an April 1, 2013, final rule, the U.S. Department of Agriculture (USDA) amended the Guidelines for Designating Biobased Products for Federal Procurement. The amendments add eight sections to designate product categories within which biobased products will be afforded federal procurement preference: aircraft and boat cleaners; automotive care products; engine crankcase oil; gasoline fuel additives; metal cleaners and corrosion removers; microbial cleaning products; paint removers; and water turbine bearing oils. The amendments also add the proposed countertops subcategory to the existing composite panels product category. USDA also established minimum biobased contents for each of these product categories and subcategories. In addition, USDA is officially changing the term “item” to product category. The amendments will take effect on May 1, 2013.