In the bathroom of my apartment I have a slot that's made to drop used razor blades in. I suspect that the blades just drop into the side of the building. Obviously I live in an old building, built when DE's were the norm. My question is about the life of a (modern) dangerous blade. I think that when the building (and the slot) were made that carbon steel blades were the most used. Those blades probably rusted into nothingness while in the side of the building. But what about new stainless platinum coated blades. Do they just sit and wait for a future construction worker to cut his finger?