Safety first:Keep food safe by selecting proper lunch bags and keeping them clean. MANHATTAN Using a brown paper sack as a lunch bag for a turkey sandwich could be unsafe, according to a Kansas State University food safety specialist. Paola Paez, research associate professor for Kansas State University's Center of Excellence for Food Safety Research in Nutrition Programs, says instead of a A Guide to Safe Reusable Grocery Bag Use - Water Quality Aug 31, 2012 · Separate Foods in Bagging :At the check-out, consumers can request that clerks bag raw meats, poultry and fish separately from ready-to-eat foods to avoid cross-contamination. In addition, most clerks will place these items in plastic bags before packing. If not, ask for it.