In mid September 2000, traces of the Aventis Bt corn event were identified in taco shells manufactured by Kraft Foods and distributed through the fast food chain, Taco Bell. This occurence represented a significant challenge to the existing grain production, handling, and processing sector since this biotech product was not approved for use in grain products for human consumption. Thus, a costly recall was required to remove the unapproved product from the marketplace. A second recall of taco shells found to contain traces of StarLink from Safeway food stores was announced on October 11, 2000.