Two interchangeable heads consider the environment while allowing for optimal ergonomics. The sponge brush is designed for difficult to reach areas in the portafilter, including the spout. The bristle brush is designed to match the diameter of the portafilter for heavy cleaning and can also be used to clean drip trays and accessories. Expansion pack of bristle brush and extra sponge is available for purchase separately. Use Scrubz™ with Cafiza® Espresso Machine Cleaning Powder, Grindz™ Grinder Cleaner and Rinza® Milk Frother Cleaning Tablets.