Remove any cushions from the polyvinyl patio furniture.
Spray the polyvinyl patio furniture with a garden hose to loosen any debris.
Fill a bucket with warm water and add 1 to 2 tbsp. dish detergent.
Dip a scrub brush in the bucket, and scrub the polyvinyl patio furniture thoroughly with the brush, starting from the top and working your way down.
Dip a cloth in the soapy water, and wring it out. Wipe the cushions with the cloth to remove any dirt or stains.
Rinse the polyvinyl furniture and cushions with the garden hose.
Wipe the furniture and cushions with a towel to dry. Replace the cushions.