Coffee fiends everywhere grapple with a familiar foe: stubborn stains on their favorite mugs. No matter how many times you run them through the dishwasher, those coffee stains just won't come clean.

Around 80% of coffee-drinking Americans have more than one cup of the sacred bean juice each day, according to data from Statista, and coffee mugs are almost as sacred for coffee drinkers as the ...

If you are a regular coffee drinker you may notice stains start to build up on your mugs, thermoses and coffee pots. Brown coffee stains will start to form on anything that coffee sits in for a while.

The secret to a pristine travel mug isn't complicated cleaning solutions or special tools—it's consistency. "Clean it regularly!" emphasizes Contorno. "The best way to keep your stainless-steel coffee ...