I had an old house with one of those. I renovated the bathroom so I can confirm they all go into the wall. God what a mess. 2ft of rusty used razor blades wedged in there.

[–] Psythik@lemmy.world 13 points 9 months ago (1 children)

Older medicine cabinets have a slot in them for this very purpose. A lot of people living in old homes probably have a razor blade slot or two and don't even realize it.

[–] ShellMonkey@lemmy.socdojo.com 5 points 9 months ago

I was one, I've also found and antique ice pick and ball peen hammer in there. One of those 'those are a problem for future gens' type solutions.