My mouse had a battery leak inside of it. I removed the dud battery and tried to clean it a little but it would not work. After following these instructions I was able to fully disassemble the mouse and clean it out with soapy water, rinse in clean water, dry off with compressed air, and then clean in isopropyl alcohol and dry off with compressed air.

The mouse now works perfectly and doesn't need to go to the landfill.

Thank you very much!

Sam