How do I properly and conveniently dispose of a razor blade without having to buy blade banks? Right now, I put all the blades in an empty Irish Spring cardboard soap box and keep it on my nightstand. It is taking a very long time to fill up. When it is full, what do I do with it? How do I properly recycle the blades, are they recyclable? Should I put them in a metal can and then put it in the recycling bin?