Masks are making a comeback at some major retailers. Here are some of the policies

To prevent further spread of the delta variant, the U.S. Centers for Disease Control and Prevention updated its mask guidance to recommend that fully vaccinated people wear masks indoors when in areas with "substantial" and "high" transmission of COVID-19. With that updated guidance, some stores are making changes to their own mask policies.Here's a look at mask policies and recommendations at some of the nation's biggest stores:AldiFace coverings are required for unvaccinated customers and employees, and where required by state or local jurisdictions.AppleFace masks may be required for customers, depending on local mandates. Masks will be provided to customers who don’t bring their own. N95 masks with valves, and masks that do not cover your nose and extend below your chin— such as bandanas, are not permitted at Apple stores.ChipotleBased on the new CDC guidance, masks will be required for all employees as well as encouraged for guests located in high COVID-19 transmission areas of the country.CostcoCostco locations will follow the face mask regulations of the applicable state and local jurisdictions.CVSFace coverings are required for employees and customers who are not fully vaccinated. Children under 2 and people with medical conditions or disabilities who may be adversely affected by a face covering do not need to wear one.Dollar GeneralDollar General does not require fully-vaccinated employees, customers and vendors to wear facial coverings or masks. All others are encouraged to continue wearing face coverings. In areas where local, county and/or state law mandates mask use, employees and customers are required to wear masks.Customer exceptions include situations where wearing a mask is not recommended due to age, a health or medical condition, or is otherwise exempted by state or local order. Dollar Tree/Family DollarOn masks, Dollar Tree and Family Dollar stores follow the latest guidelines from the CDC, as well as all local and state ordinances.Dunkin'All Dunkin' locations nationwide are following local guidance on masks. Home DepotBeginning Aug. 2, Home Depot requires associates, contractors and vendors to wear a mask while indoors at all U.S. stores, regardless of vaccination status. The retailer also asks customers to wear masks while in its stores and will continue to offer masks to those who don't have one.Kohl'sEffective Aug. 3, Kohl's will require store associates in counties with substantial or high risk of transmission, as identified by the CDC, to wear masks while in store. The retailer also recommends customers in substantial and high-risk counties wear masks while shopping. KrogerKroger requires employees and customers in all locations to wear a mask when shopping in its stores.McDonald'sMcDonald's told USA Today it will require its customers and staff to wear face coverings again inside its U.S. restaurants in areas with high or substantial COVID-19 transmission, regardless of vaccination status.Sam's Club/WalmartAll Walmart and Sam’s Club associates working in an area of substantial or high transmission are required to wear a mask or face covering while working indoors, regardless of vaccination status.StarbucksStarbucks will require customers to wear masks while in its stores where it is mandated by local mandates. Starting Aug. 5 all company-operated store partners are required to wear facial coverings, regardless of vaccination status.TargetTarget requires face coverings for its team members and strongly recommends face coverings for all customers in areas with substantial or high risk of transmission.WalgreensFully vaccinated customers do not need to wear face coverings inside of Walgreens stores, unless state or local regulations require them. Customers who are not fully vaccinated are asked to continue wearing a face covering. Employees who are fully vaccinated are also not required to wear face covers while working, unless mandated by state and local regulations. Unvaccinated employees will continue to wear face coverings while working. Editor's note: A previous version of this story said Dunkin' would be requiring masks as of Aug. 5. That information was incorrect and has been corrected.CNN contributed to this report.