Remove dust and debris by regularly vacuum upholstery using cleaning attachments. Treat all spills and stains as soon as they occur by blotting the fabric to remove the substance. If in-depth cleaning is required, mix 16 ounces of lukewarm water with one tablespoon of liquid detergent, blot the stain with the mixture and gently rinse the area with a clean, damp cloth until soap is removed. Allow to air dry.