The answer to 'countertop stained' is that countertop stains can be caused by a variety of factors, including spills, heat damage, and improper cleaning. Symptoms may include discoloration, etching, or a dull appearance. Solutions depend on the type of countertop material and the severity of the stain.
For minor stains on stone or solid surface countertops, you may be able to remove them using a mild abrasive cleaner or a poultice. For more stubborn stains, you may need to use a specialized countertop cleaner or call in a professional cleaning service. For deeper damage like etching or heat marks, you may need to have the countertop refinished or replaced.