to ball type mice not the optical type.
If your mouse has stopped moving the cursor but the buttons still work or it isn;t as smooth as it used to be then this tip should help fix that. A lot of people will go out and buy a new mouse when all they needed to do was clean it.
To clean your mouse all you need is some rubbing alcohol, paper towels, cotton swabs and sometimes a pair of tweezers.
First thing to do is open the cover on the bottom and take the ball out. Use your thumbs to twist the cover and it will unlock. Set these aside we will clean them last.
Now look in the cavity and you will see a couple of wide rollers. These are what the ball rubs against and these in turn are used to generate the position signals to your computer
. When they get dirty they won't roll and the result is that the mouse doesn't think it has moved. When you look at the rollers a dirty one looks like the photo.
The grey can be a a few things usually a mix of oils and dust. And sometimes it is lint. Soak one of the swabs in alcohol and wipe the roller. You will have to clean a spot then rotate the roller to clean a new area. When the stripe or buildup is gone then go to the next one. This takes a minute
or so per roller so it is quick. If the buildup is stubborn you may need to scrape it off then clean.
The next thing to clean is the ball using a paper towel with alcohol. Just give it a good wipe and let it dry. Next clean the cover and the bottom of the mouse body. You may want to clean the surface you use the mouse on as well.
Replace the ball, replace and lock the cover in place and you are done.
The mouse should work normally now. If it still doesn;t it can be due to wear or lint on the internal sensors. However cleaning the mouse like this fixes it about 99.99% of the time.