That will depend on the surface. Usually, you should use pH neutral products in porous surfaces, like marble, to avoid problems. On the other hand, some sealed surfaces like stainless steel and enamel might require something more acidic.
Add about 1 tbsp (13.8 g) of baking soda to the mug/carafe, along with enough warm or boiling water to form a paste. Evenly coat the stained areas, letting the...
Lemon juice works wonders! Mix 1 part lemon juice with 1 part warm water (use a real lemon for this). Then, scrub until the stain disappears. You can also try...
Soaking in dishwashing detergent is usually our first line of defense. If that doesn't do the trick, spray equal parts dishwashing detergent and vinegar on the stain and let it...
Use some Dove soap and keep scrubbing it, making sure to also rub the cloth together. Afterwards, use some conditioner before scrubbing again. Scrub for about another two minutes, then...