"As the number of confirmed cases has spiked in communities across the country recently, so too have the number and types of face covering mandates being implemented," Walmart said in a news release Wednesday. About 65% of its more than 5,000 stores, including its Sam's Club locations, are located in areas where there is government mandate on face coverings.

"To help bring consistency across stores and clubs, we will require all shoppers to wear a face covering starting Monday, July 20. This will give us time to inform customers and members of the changes, post signage and train associates on the new protocols."

The change will be enforced on July 20, and comes even as there is federal mandate to wear a mask exists, however the Centers for Disease Control and Prevention says everyone "should wear a cloth face cover when they have to go out in public" adding that "face coverings are meant to protect other people."