I have a few stainless steel razorock de razors and I was wondering what is the easiest and safest way to clean them if they are dirty? do you just use soap and water or do you use something else? if you use soap, does it matter what kinda soap you use? is hand soap ok to use to do you need to use real soap? I don't keep my de razors as clean as I should. I usually just rinse them off with water after using them, but they are still dirty.