So, silly question, but I'm kind of a newbie so I was curious... I was reading online that if you have multiple razors, you should not leave the blades in the razor between shaves. So, what do you do with the blades? Do you dispose of them after one use? Is there a particular method of storing the blades separate from the razors? RAD has already set in for me, so I need some help. Anyone have any advice?