In this Feb. 2, 2011 photo, a sign promoting the use of reusable bags is posted on a cart return station outside a Kroger Co. grocery store, in Cincinnati. The nation's largest grocery store chain has eliminated a bonus for shoppers using their own reusable bags, even at a time when some cities have banned or put fees on the use of plastic bags. (AP Photo/Al Behrman)
In this Feb. 2, 2011 photo, a sign promoting the use of reusable bags is posted on a cart return station outside a Kroger Co. grocery store, in Cincinnati. The nation's largest grocery store chain has eliminated a bonus for shoppers using their own reusable bags, even at a time when some cities have banned or put fees on the use of plastic bags. (AP Photo/Al Behrman) AP
In this Feb. 2, 2011 photo, a sign promoting the use of reusable bags is posted on a cart return station outside a Kroger Co. grocery store, in Cincinnati. The nation's largest grocery store chain has eliminated a bonus for shoppers using their own reusable bags, even at a time when some cities have banned or put fees on the use of plastic bags. (AP Photo/Al Behrman) AP

Wholesale prices spike

March 17, 2011 12:00 AM