Tomato sauce happens. Here's how to make it and other stains disappear.
It might seem like your plasticware will never be clear again, but there's hope: Fill with warm water and drop in two or three denture tablets, depending on the container’s size. “The tablets typically contain baking soda and citric acid, which will create a fizz that breaks down the red stains,” says Laura Fuentes, cookbook author and founder of Momables.com. Let sit overnight and wash by hand the next day.
Another trick? Set reusable plastic containers in direct sunlight, says Donna Smallin Kuper, author of Cleaning Plain & Simple. “Prolonged exposure will make the stain disappear,” she says.
Sometimes, even glass containers are hard to get clean. In those cases, says Fuentes, try soaking the container in half a teaspoon of Clorox bleach per one to two cups of water before it goes into the dishwasher. Skip the drying cycle—it may set any stain that remains.