"Got mask? Come on in!" says a big sign outside Leitner's Garden Center in St. Paul.
"It's a request, not a requirement," said Joan Westby, the store's general manager.
But it's been working. She estimates that 90% of customers are now wearing face masks, with some of them running back out to their cars to grab them.
As the economy begins to slowly reopen, wearing face masks is becoming the new expectation. Until there is a vaccine or other proven treatments for COVID-19, many public heath experts say widespread use of face masks, along with social distancing, will help limit the spread of the virus in the months to come.
Many grocery stores and retail shops are now requiring employees to wear face masks while encouraging customers to do the same. Costco is going one step further and will make them mandatory for shoppers starting on Monday.
Major airlines including Delta and American said last week that they, too, will start requiring passengers to cover their faces on flights.
Several states from New York to Illinois, Pennsylvania and Massachusetts also have put regulations in place saying residents must wear face coverings in public spaces such as in stores or while using public transportation.
Minnesota hasn't gone that far yet, but last week Gov. Tim Walz encouraged residents to wear face masks in public as he announced a two-week extension of the state's stay-at-home order. Under the revised order, more retailers can reopen on Monday for curbside pickup and delivery, with state officials recommending that workers wear masks and gloves as much as possible.