The Drinkwell Cleaning Kit is a 3-brush kit that provides a convenient and easy way to keep your Drinkwell fountain clean! The big brush has a soft sponge on top to easily clean the bowl and large parts of the fountain, plus it features bristles on the side to scrape away accumulated debris. The medium-sized brush is good for cleaning just about any part of the fountain. The tiny brush fits small nooks and crannies such as the filter housing and pump. The bristles on these brushes are tough enough to clear away the gunk from everyday use yet won't scratch the fountain material.