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How to return an item bought from a Walmart store
You can take your item back to any Walmart store.
For most items, Walmart accept returns within 90 days after purchase. For the following items, Walmart will only accept returns within 15 days of purchase:
To see the full list of departments and exceptions, visit the full Walmart Stores Return Policy.
Please refer http://help.walmart.com/app/answers/detail/a_id/205 for more details.