Six Steps to Dust Window Blinds: Check the Material Before Using Water
Metal slats, wooden blinds and fabric shades need different care. Dust gently and avoid washing or steam unless the product instructions explicitly allow it.
Hunter Douglas recommends routine gentle dusting and checking care instructions for each product. IKEA says to wipe HOPPVALS cellular blinds with a dry cloth and not wash them. The cover shows a generic Venetian blind, not either brand or a cleaning demonstration.