Vacuum with a soft brush. Wipe with slightly damp cloth. Do not use harsh chemicals. When left outdoors Rattan will weather over time. Glass is fragile, handle with care. Add mild detergent (such as Sunlight Liquid) in warm water. Use a new soft cloth, never scouring pads or similar. Use newspaper to polish the glass with and to prevent streaking. Scratches on glass tops can be removed professionally provided they are not too deep.