The first step in keeping your light grey fabric sofa clean is regular maintenance. Vacuuming should be done at least once a week using the upholstery attachment on your vacuum cleaner. This helps remove surface dust, pet hair, and small debris that can embed themselves into the fabric. Pay close attention to the areas between the cushions, along the seams, and under the arms of the sofa, as these are common spots for dirt to gather.

Inevitably, spills and small stains will happen. When dealing with fresh stains like a spilled glass of red wine or a dropped bit of food, time is of the essence. Immediately blot the stain with a clean, absorbent cloth or paper towel. Do not rub, as this can push the stain deeper into the fabric and make it harder to remove.

For liquid stains, after blotting, mix a solution of mild detergent (about a teaspoon) with a cup of warm water. Dip a clean cloth into the solution, wring it out well so it's damp but not dripping, and gently dab at the stain. Work from the outside edges towards the center to prevent the stain from spreading. Rinse the area with a clean, damp cloth to remove any detergent residue and then blot dry with a dry cloth.

For greasy or oily stains, you can sprinkle a small amount of baking soda or cornstarch over the stain. Let it sit for a few minutes to absorb the oil, and then gently brush it away with a soft brush before following the steps for liquid stain removal.

Every few months or when the sofa starts to look dull, it's time for a deep clean. You can purchase a commercial fabric cleaner specifically formulated for upholstery. Before applying it all over the sofa, test it on an inconspicuous area, like the back or underside of a cushion, to ensure it won't cause discoloration.

Once you've verified it's safe, spray the cleaner evenly over the sofa's surface, following the product's instructions. Use a soft-bristled brush to gently scrub the fabric in a circular motion, helping the cleaner penetrate and lift dirt. Then, use a clean, damp sponge or cloth to wipe away the cleaner and the loosened dirt. Let the sofa air dry completely, preferably in a well-ventilated area.

To reduce the frequency of cleaning, consider using sofa covers or throws. They not only add an extra layer of protection against spills and stains but also allow you to change the look of your sofa easily.