We all know how over time our input devices get contaminated by particles from objects that tend to reside in our hands in between acts of data input. Basically I am speaking about those bread crumbles in the keyboard and that slightly sticky stuff that covers the buttons of a mouse after a few months of everyday usage. Today it got too much for me and I gave my mouse a bath - disassembled it and washed all non-electronic components with liquid hand soap. After a couple of minutes and drying with a paper towel, all the parts looked dry enough for a reassembly. The patient lived on, giving a much more pleasant tactile feedback to its user (me).
P.S. It looks like I botched the clicking feel that a wheel of a mouse makes when scrolled. I've heard that it is actually better so, let's try to find out by trying.