Anonymous
Anonymous asked in Home & GardenDo It Yourself (DIY) · 6 months ago

Why are there black dots on the Styrofoam in my window air conditioner? Is it normal? Is it mold?

6 Answers

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  • 6 months ago

    If it was not originally there then it's probably mold.

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  • 6 months ago

    mold.. spray bleach on it and let it dry

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  • 6 months ago

    Add close-up photos.

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    Lv 7
    6 months ago

    Mold, possibly Stachybotrys or Aspergillus.

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  • 6 months ago

    I couldn't tell without looking at it. Sometimes expanded polystyrene (Styrofoam) has different colored particles in it.

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  • 6 months ago

    Mold from the moisture.

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