Very easy. The inside is made of plain white glazed porcelain and is as easy to wash as any other regular dishes you have at home. Given its size, shape and weight, precautions must be taken during manipulation of your OVOPUR to avoid breakage or injuries.
Please make sure you are registered to an OVO+ annual cartridge replacement program to get your unit covered by the OVO+ guarantee against accidental breakage. www.aquaovo.com/en/our-warranties.html