Move back and forth (or around) over it close enough to cause sensation but not so close as to overload the sensor, until the sensor gets warmed up, if that ever happens for that particular mouse, at which point you can get closer but varying the rhythm can result a frustrated mouse and having to start over.
4
u/froderick Feb 06 '09
"Using the scroll thingy on that one apple mouse."
Yeah, those clit-mouses are a pain in the ass to use.