With Method standing at number seven on Inc. magazine's list of the 500 fastest-growing companies in 2006, cofounder Adam Lowry is searching for a biodegradable cleaning cloth to expand Method's line of "green" household products. Sustainable design principles have been a guiding force in Method's strategy, and being biofriendly is critical. So is sourcing in the United States. But only China can manufacture the corn-based cloth Lowry has in mind, and there is no way to certify that the product is free of genetically modified organisms. Lowry has to balance his firm's fundamental commitment to environmental sustainability against the fact that some retailers refuse to carry products containing GMOs.