I see a lot of people who either NEVER clean their bearings, or do it improperly when they DO clean them. I’ve seen many different ways to clean them, so I thought I would make a standard for cleaning. Here it is, enjoy!
Put the bearings in a container WITH A LID and fill it to the brim with isopropyl alcohol. Cap the container and shake for 5 minutes. If your bearings are still coated in nasty, repeat the process. Set the bearings out to dry. While you're waiting for the alcohol to fully evaporate, you can take the time to clean the bearing covers with some paper towels.