Melamine cups are ideal for use in the van. However, they are prone to staining easily, making them appear grubby. This destainer from Isabis Leisure effectively cleans away the stains. Simply fill cups with boiling water, add a couple of spoonfuls of the solution using the pre-measured spoon and leave to soak. Within 20 minutes, cups will look brand new. It also works well on other melamine dinnerware.