preferably weekly.
Metallic finishes
Use lukewarm water with a mild household detergent to clean metal finishes. Gently wipe the metallic surfaces, rods and parts with a soft, dampened cloth or chamois. Dry well with a clean, soft cloth. Never use cleaners with ammonia, bleach or hard chemicals and avoid paper towels or scouring pads.
Glass
Never use abrasive materials for cleaning glass as they may cause scratches. Use appropriate glass cleaning solutions and a microfiber cloth. If you are using a chemical cleaner, take care not to spill it on any of the surrounding metallic finishes. After drying with a soft cloth, you can use a piece of crumpled newspaper to give the glass added shine and sparkle.
Acrylic
Avoid commercial household cleaners because the chemicals in these products can dull and craze the acrylic. The best way to care for acrylic surfaces, rods and parts, is to clean with lukewarm water and a bit of liquid soap. Rinse with clear water and dry well. Always use soft cloths for cleaning so as not to scratch the acrylic.