MacOS – How to switch horizontal and vertical scrolling directions

I have also suffered with the "Dirty Mouse Ball" problem with the Mighty Mouse. To get it working again, I would hold it upside-down and spin the ball quickly in many directions.

This worked the first few times, but later, I found it was not doing the job. I then started using a barely damp microfiber cloth while holding it upside down and rolling the little ball around as much as possible. This seemed to work a little better.

Eventually, I found myself having to clean the thing multiple times a week and got tired of it. I replaced it with a Logitech mouse and then later the Magic Mouse and Track pad and I don't miss the little ball at all.

Ultimately, I suggest that you just replace the Might Mouse, even if you have to go with a non-Apple product. Otherwise, I think you will find yourself spending more time fighting the ball than using it.

Try System Preferences -> Energy Saver -> Automatic graphics switching -> Off