They are very handy when away from home for any length of time. When travelling there really is no safe place to dispose of used blades. These type of blade dispensers will store your used blades till they can safely be disposed of. It is possible to reuse this type of dispenser, at least it is for me.I get that blade dispensers are kind of handy but TBH I prefer a cardboard box and paper wrapping. I think single-use plastic is something we should try to move away from.