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Sounds like it. When drywall compound that has been open in a humid environment gets left sitting for a long time it can get moldy even if the lid was put back on properly.

Don't use it.

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15y ago

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What does black spots on the wall indicate?

The only thing I know of that would cause black spots on the wall is mold. Instead of thinking it's some sign of the Supernatural try pulling out a piece to see if there is black mold behind it. If there is then you'll have to move because it's hazardous to your health.ANSWER I agree it is likely mold. Most mold is not poisonous and if it is not then all you need to do is remove the molded wall material and try to find the sourch of moisture in the wall that allowed the mold to grow - for more info Google Mold Remediation. Good luck.


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