Walmart has added on to the growing list of retailers implementing face mask requirements for customers to help limit the spread of COVID-19 in the United States.

Starting on July 20th, all Walmart customers will need to be wearing a face mask to gain entry into stores to shop. Walmart will be deploying trained "Health Ambassadors" to remind guests of the new requirements.

At Walmart's Costco-like subsidiary, Sam's Club, complimentary masks will be available for members, who can also purchase face masks inside of the store.

Walmart has cited the CDC in their decision to add this policy, saying that "face coverings help decrease the spread of COVID-19, and because the virus can be spread by people who don’t have symptoms and don’t know they are infected, it’s critically important for everyone to wear a face covering in public and social distance."

The new policy was announced the same day that Starbucks' own face mask requirements are scheduled to take effect. It also comes shortly after CDC Director Robert Redfield stated that if everyone wore face masks and practiced social distancing, COVID-19 could be controlled within 1-2 months.