Mold
Often seen as black, green, white, or yellow spots or patches on walls, ceilings, and floors. Exposure to mold can cause respiratory issues, allergies, skin irritation, and in severe cases, more serious lung infections or neurological problems.
Optimal
No visible mold or mildew; no musty odors.
Cautionary
Small, localized patches of mold/mildew (e.g., in bathrooms or basements); slight musty odor.
Hazardous / Out of Range
Large areas of mold/mildew; strong musty odor; visible mold on walls, ceilings, or floors.