Molds are tiny fungi whose spores float through the air. They like damp environments and need 4 things to grow: food, air, appropriate temperature, and water. Molds can be found outdoors, in homes, and in other buildings. . Spores are microscopic seed particles that travel through the air. Molds grow best in dark, damp places. Outside, mold grows on rotting logs, wet leaves, certain grasses, and weeds. In the home, mold often grows in or on the following:
- Damp basements and closets
- Bathrooms (especially shower stalls)
- Places where fresh food is stored
- Refrigerator drip trays
- House plants
- Air conditioners
- Humidifiers
- Garbage cans or waste baskets
- Mattresses
- Upholstered furniture
- Old foam rubber pillows
- Walls or other home structures if there has been water damage from a flood or leak. You may not be able to see mold in walls.