If your house was built before 1970, it's very likely that there are razor blades in the wall. Here's what's going on. ... People ditched razor blade disposal slots sometime around the 1970s.

The openings led to a pit in the wall where the blades would stack up behind the mirror. One TikToker, named Carly Knight, posted about her findings when she saw the old razor blade slot in her home.

Razor slots in bathrooms were invented to be safe way to dispose of double-edged safety razors, which were introduced by Gilette in 1903. They've since become less common.

Razor-blade slots are common in homes built before 1970. The slots let people "dispose" of the blades, which would pile up in a space behind the wall.

Others had their own experience of the razor blade disposal technique: "I live in an apartment built in the 60s and my bathroom still has the original medicine cabinet with the razor slot," wrote ...

Carly Knight of Los Angeles discovered a “used razor blade disposal” slot in the bathroom medicine cabinet of her family’s 1950s home. Her video, first posted in 2020, has 3.8 million views ...

April Wilkerson. Safe and Simple Razor Blade Disposal Tips. Posted: December 31, 2024 | Last updated: March 7, 2025 "I'm April Wilkerson, a DIY enthusiast with a passion for creative projects and ...

Carly Knight of Los Angeles discovered a “used razor blade disposal” slot in the bathroom medicine cabinet of her family’s 1950s home. Her video, first posted in 2020, has 3.8 million views ...

Carly Knight of Los Angeles discovered a “used razor blade disposal” slot in the bathroom medicine cabinet of her family’s 1950s home. Her video, first posted in 2020, has 3.8 million views ...

Old razor blades fall out of a wall behind a bathroom medicine cabinet of a 1950s home near Plaza Midwood in Charlotte NC. ... The razors are still at the 1,182-square-foot, ...