What is a quick and effective way to clean your roller hockey skate bearings?

I recently decided to clean my bearings. A friend told me to remove them, clean them with paper towel to remove a majority of the dirt, and then soak them in a lubricant (WD40) for about a day. I was wondering if this was an effective way to clean your bearings. I also heard of people completely taking the bearing apart and cleaning each individual bearing.