I own this mouse and was originally really pissed when I couldn't figure how to clean the scroll wheel, but a simple paper clip or needle wiped around the edge where the ball meets the mouse casing cleans it right out. It is far easier to clean than the old mice that used a trackball in the base. And the ability to scroll in any direction, especially in programs like photoshop or after effects more than make up for the nuisance of cleaning every now and again. Plus, it uses a bluetooth connection- no need for a usb port.