It is best to clean your WonderGliss coated ceramic surface daily with a damp cloth. Make sure that the cloth is always clean. Microfiber cloths are not recommended. Should a cleaner become necessary, we recommend using a mild agent such as a commercial vinegar cleaner (see recommendations in the care instructions). Acidic cleaners (based on acetic or citric acid) are particularly suitable for removing limescale deposits. To clean your toilet, you can use a toilet brush as usual. If an unexpected stubborn stain has formed on the surface, leave your bathroom cleaner to soak overnight. Foam cleaners are particularly suitable for this purpose, as they adhere well even to sloping surfaces. Alternatively, you can lay toilet paper soaked with cleaner on the dirt.