- 1). Add enough water into a ½ cup of baking soda to make it into a thick paste. Dip a clean cloth into the paste and use it to scrub the stained area. The baking soda will act as a mild abrasive to help remove stubborn surface stains.
- 2). Fill the plastic container with one part chlorine bleach and two parts water and allow it to soak for two to three hours. Wash the container with warm, soapy water and rinse well. Repeat the process until the stain is gone.
- 3). Dampen a clean cloth with white vinegar and wipe away greasy stains. White vinegar is effective for cutting through stubborn grease. Wash the container with warm water and dish soap.
- 4). Dip a clean cloth in undiluted lemon juice and wipe down the stained area with it. Set the container outside in the sunshine for two to three hours to bleach out stubborn stains that seem to have changed the color of the plastic.
- 5). Coat the stains in a thick layer of yellow mustard and leave it on overnight. Wash the container with warm, soapy water in the morning to remove the mustard and the stains.
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