2. The White Vinegar Soak and Scrub

White vinegar is a weak acid that excels at breaking down alkaline residues and mineral deposits, and it's particularly good at tackling hard water film and some food stains. Using a paper towel soaked in vinegar maximizes contact with the stain.

1. Materials Needed:

You will need white distilled vinegar, paper towels, and a sealable plastic bag or another container large enough to hold the stained item.

2. Step-by-Step Process:

Start by rinsing the Tupperware. Then, saturate a few sheets of paper towel with undiluted white vinegar. Line the interior of the stained container with these vinegar-soaked paper towels, pressing them directly onto the stained surfaces. If the stain is on the lid or an awkward spot, place the vinegar-paper towel pad on it. For complete coverage, put the entire container (or the lid) inside a sealable bag along with the vinegar-soaked paper towels to keep everything moist. Let it sit for at least one hour, or overnight for severe stains. After soaking, use the same paper towels to scrub the area—the stain should now lift more easily. Rinse thoroughly with soap and water.

3. Why This Works:

The acetic acid in the vinegar works to dissolve the stain compounds. The paper towel holds the vinegar against the stain for an extended period, preventing evaporation and ensuring continuous chemical action. This method is excellent for removing red sauce stains and odors.