Why is there black spots on my white plastics in the kitchen?

It's impossible to say for sure without seeing the black spots, but here are some common causes of black spots on white plastics in the kitchen:

1. Mold and Mildew: This is a common culprit, especially in humid environments. Mold and mildew thrive in dark, damp places and can leave black spots on surfaces.

2. Staining from Food: Food spills, especially those containing strong pigments like coffee, tea, or berries, can leave stubborn stains on plastic.

3. Heat Damage: Prolonged exposure to high heat, such as from a stovetop or oven, can cause plastic to discolor and develop black spots.

4. Chemical Reactions: Some cleaning products, especially those containing bleach or harsh chemicals, can react with plastic and cause discoloration.

5. Age and Wear: Over time, plastics can naturally degrade and become discolored, including developing black spots.

6. Sun Exposure: While less common in a kitchen, prolonged exposure to direct sunlight can cause plastics to fade and even turn yellow or black.

To figure out the cause of the black spots, consider the following:

* Location: Where are the black spots located? Are they on surfaces that are often exposed to food or water?

* Appearance: Do the black spots look like mold or mildew (fuzzy, raised)? Or are they flat, like stains?

* Cleaning Products: What cleaning products have you used on the affected plastics?

* Heat Exposure: Are the plastics located near a heat source?

To remove the black spots, you can try the following:

* Cleaning with soap and water: Start with a mild dish soap and warm water. Gently scrub the spots with a soft cloth.

* Baking soda paste: Make a paste of baking soda and water and apply it to the spots. Let it sit for 15-20 minutes, then scrub with a damp cloth.

* Vinegar: White vinegar can help remove stains and kill mold. Dilute vinegar with water and apply it to the spots. Let it sit for 10-15 minutes, then scrub with a damp cloth.

* Bleach solution: For mold and mildew, a diluted bleach solution can be effective. However, use this method with caution as bleach can damage some plastics.

If none of these methods work, it's best to consult a professional cleaning service or replace the affected plastic items.