Electronic touchpads are the trend nowadays. It gives your appliances a sleek feel. They are the type that is very easy to clean. Most of the time, soil easily comes off with just one swipe of a sponge. Other sleeker controls are those that are concealed or integrated that you cannot see them unless you open the door of the machine. The knobs, on the other hand, require a thorough cleaning and more effort compared to touchpads and controls.
Push buttons are attracting dirt and the in-betweens could be very difficult to clean. Another type of control on many dishwashers is the mechanical touchpads. They function like buttons, but they are flatter and are easy to clean. Models with mechanical buttons are usually not that expensive compared with those that come with electronic controls.