re: Mold vs Mildew in a Rental

quote:

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And it’s ‘black mold’ that people with weak immune systems are afraid of.

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The infamous “black mold” is stachybotrys, but other molds are black in color, too. The mold in this picture is probably Cladosporium, the most common of all outdoor molds.
Should still get an air test and compare it to an outdoor air test. If the inside is between 10-33% of what the outside results show, it is considered a clean breathing space according to EPA guidance.

If you want to DIY,
Go buy a fungicide at Home Depot or Lowe’s. Shockwave and Sporicidin are good. Wipe it clean with this stuff, then encapsulate it with Kilz. Another option is white vinegar cleaner.