Furniture cleaning skill
Mix 1/4 cup vinegar, 3/4 warm water and 1 tablespoon of dish soap or Castile soap. Put in a spray bottle. Mist the soiled area. Scrub with a soft cloth until the stain lifts.
Using a soft cloth or sponge, gently clean the entire surface of the couch. For solvent-safe fabrics (S or WS), use a solvent-based cleaner following the manufacturer’s instructions. For an eco-friendly option, mix equal parts white vinegar and water.
Find a recommended cleaner, if you are living in Melbourne, could ask Orange Cleaning Melbourne to do the job.
Or could try mixing a small amount of mild dish detergent with warm water. Add a little to an upholstery brush, and gently scrub any stains. If this method is effective, apply it to the rest of your cushions.