Why your garbage can smells, and how to stop it
3 min read
That smell when you open the lid is not the bag, it is the can. Food residue, spilled liquids, and the bacteria that feed on them coat the inside of the can and keep producing odor long after the trash is gone. Here is what causes it and what fixes it.
What actually causes the smell
Odor comes from bacteria breaking down the food scraps, liquids, and residue that end up on the bottom and walls of the can. Warmth and moisture make them multiply quickly, which is why a can smells worse in summer and worse the longer it goes without a wash.
Spilled liquids are the biggest culprit. They pool at the bottom, soak into every scratch in the plastic, and become a reservoir the smell keeps coming back from.
Quick fixes that help a little
Double bagging, sprinkling baking soda in the bottom, and keeping the lid closed all slow the smell down. These buy you time, but none of them remove the bacteria and residue stuck to the inside of the can, so the odor returns.
What actually stops it
The only lasting fix is removing the source: a hot water wash that lifts the residue, plus a sanitizing treatment that kills the bacteria producing the smell. Done on a regular schedule, the can never gets the chance to turn.