I am sure many on here have lots of shave soaps they bought over the years that they have used a few times and than put away because they bought other soaps. this may a dumb question, but can you use shave soaps that are a few years old without any issues? also, for those that have a ton of shave soaps (mainly the older ones you don't use anymore), what do you normally do with them? do you just toss them, used them up for test lathers?