For years there have been debates over how to set a standard for mold spore levels in homes. Because mold spore species and levels differ from state to state, no one has been able to agree. Keep in mind since each person is effected differently, there’s no definitive way to quantify the amount of exposure that will or will not cause specific symptoms. A comparison to an outdoor air sample has been a great benchmark to help establish a baseline control factor considering each indoor environment is related to its outdoor environment. Outdoor levels are generally higher than indoors, however it’s also a matter of spore-species type and circumstances causing or sheltering the microbial growth. Mold is present almost everywhere, and you are exposed to it every time you exit the home or open a window. The following table outlining mold spore ranges are solely Air-Mazings, opinion from sampling and fellow industry professional’s opinions.