The answer to 'why is my bathroom grimy' is that bathrooms can easily become grimy due to a combination of moisture, soap scum, hard water buildup, and mold or mildew growth. Over time, these elements can create a dull, hazy film on surfaces like tiles, fixtures, and grout.
Some common causes of a grimy bathroom include infrequent cleaning, using the wrong cleaning products, hard water, and poor ventilation that allows moisture to linger. Symptoms may include a dingy appearance, sticky or slippery surfaces, and visible mold or mildew in corners and crevices.