Mold spores are tiny, lightweight particles produced by mold, a type of fungus. These spores are so small that they can easily float in the air and can be found almost everywhere, both indoors and outdoors. When conditions are right, such as warmth and moisture, mold spores can land on surfaces and grow into visible mold, which can be harmful to health and property. When mold spores settle on damp surfaces, they can start to reproduce quickly, leading to mold growth. This is why it's important to keep areas like bathrooms and kitchens dry. If you notice mold, it's essential to clean it up promptly to prevent health issues and damage to your home.