But he described Whole Foods Market's use of bags made from recycled paper as an environmental "winner." Whole Foods is a relatively small retailer, but has been influential in the grocery business. Major grocery chains have copied Whole Foods by sprucing up produce sections and offering a wider variety of natural and organic products. The company's move may prompt other chains to take a look at the bag issue. Tara Raddohl, a spokeswoman for Wal-Mart, said her company began selling reusable bags in October and was looking to achieve a goal of zero waste. "Generally speaking, many of our retail competitors as well as ourselves are looking at these options, and how feasible this is, and how this will be received by the consumer," she said.