Plastic lunch boxes are the problem

The quickest fix for a smelly, stained lunch box is baking soda and sunlight — but the real answer is to stop buying plastic.

Wash the container the minute you empty it. Curry and tomato sauce are oily, and once that oil dries onto plastic, it bonds. Hot soapy water immediately beats any deep-cleaning routine later. If you can’t wash it right away, at least rinse it out so nothing has time to set.

Already stained? Make a thick baking soda paste, coat the inside, leave it overnight, then rinse. For lingering odor, fill it with hot water and a couple tablespoons of baking soda or white vinegar and let it sit for an hour. Then the secret weapon: put the empty container in direct sunlight for a few hours. UV light bleaches tomato stains and kills the bacteria causing the smell. It sounds like a granola trick, but it genuinely works.

The permanent fix is glass or stainless steel. They don’t stain, they don’t hold odors, and they clean up in seconds. Heavier, yes, but if you pack curry more than once a week, it’s worth it. And if you’re stuck with plastic, coat the inside with a thin layer of oil before packing tomato-based food — it keeps the acids from grabbing into the surface.

Future You deserves a container that doesn’t smell like last Tuesday’s lunch.