The mold you find on outdated bread or over-ripe fruit is easy to spot and avoid. Mold that grows in those unseen corners of the bathroom, basement or crawl spaces can be considerably more difficult to detect -- and considerably more dangerous. Mold can lead to a host of physical ailments, from mild (runny nose, sneezing, itchy eyes) to much more serious (skin rashes, asthma and respiratory infections) [source: The Bump].
And, since these microscopic organisms can grow just about anywhere, they're prevalent throughout many homes. With more than 1,000 types of mold identified in U.S. homes, it's a problem that can't be ignored [source: Alliance for Healthy Homes].
To prevent mold outbreaks, understand that these irritating spores love dark, damp spaces (and be aware that airborne mold spores are much more resistant to dry environments). Look for discoloration along floors and walls. If you've had any flooding in your basement or water damage to your roof or walls, there's a good chance that those areas are serving as a home-based petri dish for mold growth.
Given that these are often hard-to-reach places, the work often requires a professional contractor. The critical issue in addressing a mold problem is to not only to safely remove any existing mold and spores, but also to ameliorate the existing moisture issue.
Next up, what can happen when modern conveniences turn bad?