The answer to 'why is my countertop filthy' is that countertops can become dirty and stained for a variety of reasons, including food spills, grease buildup, and improper cleaning. Over time, the surface may become discolored or develop a hazy film if not properly maintained.
Some common causes of a filthy countertop include using the wrong cleaning products, not cleaning up spills right away, and allowing crumbs or debris to accumulate. Countertops made of porous materials like granite or marble may also show stains more easily if they are not sealed properly.