From the Annals of Razor Blade Disposal

Never had a cabinet slot but I used the razor in my early days Made the mistake of not tightening it all the way once A painful experience

That's why, according to ​Reader's Digest​, the back of the medicine cabinet gained a slit for razor blade disposal during the 1950s

razor blade slot in medicine cabinet so where do all those used razor blades go? in the bottom of the wall! and they wait there until some poor future remodeler decides to

razor shark slot online If your house & medicine cabinet are old enough, there may be this The little plastic boxes each set of 10 Feather blades come in has a slot