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    msk123's Avatar
    msk123 Posts: 4, Reputation: 1
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    #1

    Jan 4, 2011, 11:36 AM
    Lots of black hard debris appears under kitchen sink, no water leaks. What is this?
    smoothy's Avatar
    smoothy Posts: 25,490, Reputation: 2853
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    #2

    Jan 4, 2011, 11:41 AM

    How big are these pieces of "DEBRIS"? Just trying to eliminate insect or animal droppings as a possibility.
    joypulv's Avatar
    joypulv Posts: 21,591, Reputation: 2941
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    #3

    Jan 4, 2011, 12:31 PM
    Does your sink have black soundproofing on the underside?
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    msk123 Posts: 4, Reputation: 1
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    #4

    Jan 4, 2011, 12:51 PM
    Comment on smoothy's post
    They are hard like small stones/shavings. They are not animal droppings.
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    msk123 Posts: 4, Reputation: 1
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    #5

    Jan 4, 2011, 12:56 PM
    Comment on joypulv's post
    No. The debris is stone hard, half inch pieces and some dust.
    joypulv's Avatar
    joypulv Posts: 21,591, Reputation: 2941
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    #6

    Jan 6, 2011, 04:34 AM
    What is your sink made of? How old is it? Have you shined a flashlight up in there? Do you have a garbage disposer? Is any of the dust rust?

    But I'm still wondering about the stuff on the underside of old cast iron sinks, which was black and did tend to flake.
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    msk123 Posts: 4, Reputation: 1
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    #7

    Jan 6, 2011, 07:16 AM
    Comment on joypulv's post
    The sink and house is 16 years old. I do have a disposal. The underside of this stainless steel sink is white. I shined a flash light and can't see where it is coming from. Yes, some of the pieces have a little rust, but mostly black.
    smoothy's Avatar
    smoothy Posts: 25,490, Reputation: 2853
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    #8

    Jan 6, 2011, 09:34 AM

    Bug Poo can be rock hard... but it can be as was suggested Petrified sound deadener, though I'm surprised why the chunks are so small if it's that.
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