If your ceramic mugs have stubborn tea and coffee stains, try a baking soda paste.
Mix a little water into several teaspoons of baking soda; just enough to make the mixture pasty. Now rub the paste over the offending coffee stains with a soft cloth or sponge. Clean off with a wet sponge and dry.
The mixture also has other uses: Scuff marks on the floor, chrome on golf clubs or stainless steel in the kitchen, according to hunker.com
Rick Good spent ten years in the newspaper business, including with The News & Observer (Raleigh, NC) and The Greenville News (Greenville, SC). He co-wrote, with Melinda Coleman, Rutledge to Riley: Governors of South Carolina, 1776–Present (Published by The Greenville News), and is the author of Mind Games Trivia #1 (Amazon). He has recently spent 15 years creating original trivia content through Sounds Good Mobile Entertainment and continues that with his new company, SGME Software. He edits The Smart Reader’s money, real estate, and business coverage.