Use baking soda to remove stains from food containers

To address tomato-stained plastic or any greasy marks on your food containers, baking soda is your best bet. There are several methods to use it, depending on how much time you have available. If you can let the containers sit, start by generously sprinkling baking soda over the bottom and sides of the stained container. Then, add enough warm water to create a paste with a consistency similar to runny toothpaste. Apply this paste to cover the entire stain and allow it to sit for at least 30 minutes. If the stain remains, give it an additional 30 minutes before rinsing off the paste and washing the container as usual.
If you're short on time, you can expedite the process by mixing a squirt of dish soap into the baking soda and water paste. Use a small brush or your gloved finger to scrub the solution onto the stained area, then let it sit. The dish soap will help lift the stain more quickly, but it will still need about 15 minutes to work effectively.
More ways to combat stains

Using baking soda is one of the most effective methods for removing stains from plastic food containers, but if you don't have any available, there are a few alternatives. Vinegar can be a useful ally against fresh stains; simply fill the container with hot water, add a generous amount of vinegar, and let the mixture sit overnight before washing the container. For older stains, bleach can be employed as a last resort. Cover the stain with water, mix in a tablespoon or two of bleach, and allow it to sit for at least a few hours before thoroughly cleaning the container to eliminate any chemical residue.
If you prefer to avoid chemicals and live in an area with plenty of warm, direct sunlight, placing the plastic containers outside can help lighten stains and eliminate odors after a few hours. The most effective way to deal with stains is to prevent them from occurring in the first place. Consider using glass food containers for storing tomato-based or particularly greasy dishes to make clean-up much easier. Otherwise, stick with baking soda for a hassle-free stain removal solution.
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