 The economic impact on the pet food market has been extensive, with Menu Foods alone losing at least $42 million from the recall, even without taking into account reduced sales.The several waves of recalls, many issued late on Friday evenings possibly to avoid media coverage, and the events have caused distrust in some consumers.Reports of widespread and possibly intentional adulteration of Chinese animal feed with melamine have raised the issue of melamine contamination in the human food supply, both in China and abroad.