CHICAGO – Wal-Mart Stores Inc has begun rolling out specialized carts designed to keep employees out on the floor culling produce and reducing wastage, the latest step in a push to improve its fresh food offerings and revive sales growth.

The world's largest retailer has deployed what it calls "quality carts" at 500 stores and plans to have them in all of its nearly 5,000 U.S. outlets by the end of the third quarter, Vice President for Central Operations Shana DeSmit told Reuters in an interview.

The carts, equipped with weighing scales and a box to collect the discarded produce, will help employees carry out tasks that were typically carried out in the back room, she said. With the carts, employees can sort fresh produce by removing items nearing expiration and weighing them to manage inventory counts and help with replenishment. Wal-Mart's service levels have suffered due to fewer employees in store interacting with consumers.

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