Costco Says Everyone Must Wear Face Masks or Shields Inside Warehouses

Costco is giving members a new thing to bitch, moan and fight about ... anyone who can't wear a face mask, has to wear a face shield.

The superstore's nationwide face-covering policy update goes into effect Monday, and the new rules require all members, guests and employees to shield their faces, even if they have a medical condition preventing them from wearing a mask.

Costco was one of the first retailers to roll out mask mandates early on in the coronavirus pandemic, but originally folks with medical conditions could get a pass on face coverings.

It'll be interesting to see if the change sparks a new round of Costco shoppers losing their minds over face shields ... like this guy who got booted from a Costco back in May after refusing to mask up.