Might take a decade or two [emoji23]They work well. I use something similar here in Australia. It will take quite some time to fill it up.
As I'm aiming to recycle the used blades, the best way to go about it is to place them in a sealed metallic container, which can then be placed in the metal recycling bin at my local recycling centre. Anything with a loose lid won't be good due to the injury hazard for the workmen at the centre.I just use an old coffee tin with a slit cut into the plastic top, I might be thinking about something more secure if there were childrfen in the house. Most of my blades came in a plastic holder which have a back slot for used blades howeverView attachment 1021752View attachment 1021752