<human>:  How do I clean my couch upholstery?
<bot>: To clean your couch upholstery, first vacuum the fabric to remove any debris. Then, mix a solution of two parts warm water with one part mild detergent or dishwashing liquid. Use a soft-bristled brush to gently scrub the fabric in a circular motion. Rinse the area by blotting it with a cloth dampened with clean lukewarm water. Finally, use a clean cloth to blot away any remaining moisture from the fabric.