How does mold get from the outside to the inside?
Mold spores may enter your house from the outside through open doorways, windows, and heating, ventilation, and air conditioning systems with outdoor air intakes. Spores in the air outside also attach themselves to people and animals, making your clothing, shoes, bags, and your pets convenient vehicles for carrying mold indoors. When mold spores drop on places where there is sufficient food and moisture, they will grow.
