The Kent District Library in Grand Rapids, Michigan is imploring its patrons to please not attempt to disinfect borrowed books by putting them in the microwave. The books contain metal RFID tags that will burn the pages and potentially cause a fire. From KIRO7:
"I don't know if it was something that they saw on the news — that they thought maybe the heat would kill COVID-19," Kozlowicz told The Detroit Free Press.
The library said it uses U.S. Centers for Disease Control guidelines to ensure safety for using library materials. It also keeps all materials in quarantine for at least 72 hours.
For more on libraries' sanitization practices: "Do libraries fumigate books to disinfect them?" (Boing Boing)