They are “petri dishes for bacteria and carriers of harmful pathogens,” read one warning from a plastics industry group. They are “virus-laden.”

The group’s target? The reusable shopping bags that countless of Americans increasingly use instead of disposable plastic bags.

The plastic bag industry, battered by a wave of bans nationwide, is using the coronavirus crisis to try to block laws prohibiting single-use plastic. “We simply don’t want millions of Americans bringing germ-filled reusable bags into retail establishments putting the public and workers at risk,” an industry campaign that goes by the name Bag the Ban warned on Tuesday, quoting a Boston Herald column outlining some of the group’s talking points.

The Plastics Industry Association is also lobbying to quash plastic bag bans. Last week, it sent a letter to the United States Department of Health and Human Services requesting that the department publicly declare that banning single-use plastics during a pandemic is a health threat.