Using the Duravit Darling New Two - Piece Toilet Kit is simple. Just sit on it as you would with any regular toilet. When you're done, choose between the dual - flush options depending on your needs. For liquid waste, use the lighter flush to save water, and for solid waste, use the stronger flush. When installing, make sure to follow the included instructions carefully. If you're not confident, it's a good idea to hire a professional plumber. As for maintenance, clean the toilet regularly with a mild bathroom cleaner. Avoid using abrasive cleaners that could damage the surface. Check the flush mechanism from time to time to make sure it's working properly. If you notice any leaks or problems, address them right away to keep your toilet in good shape.