Soy milk stains on plastic can be stubborn, but with the right techniques, they can be easily removed. Here are some effective methods:

1. Dish Soap and Warm Water: Mix a few drops of dish soap with warm water. Scrub the stained area gently with a soft sponge or cloth. Rinse thoroughly.

2. Baking Soda Paste: Create a paste using baking soda and water. Apply it to the stain, let it sit for 10-15 minutes, then scrub and rinse.

3. Vinegar Solution: Combine equal parts white vinegar and water. Soak a cloth in the solution and wipe the stain. Vinegar helps break down the soy milk residue.

4. Lemon Juice: Apply fresh lemon juice to the stain and let it sit for a few minutes before scrubbing. The acidity helps lift the stain naturally.

5. Bleach (for white plastic): For tough stains on white plastic, dilute a small amount of bleach in water. Apply carefully, rinse well, and avoid colored plastics.

Prevent future stains by rinsing plastic containers immediately after use. These simple methods will keep your plastic items looking clean and stain-free!