First, let's go over a quick primer on mold. All molds are fungi, and share biology with mushrooms and athlete's foot, for example. The mold that is dangerous to humans is uncommon in the fungus world, meaning most kinds you find in your house or business aren't harmful. However, some molds are dangerous, so any mold you find indoors must be mitigated and completely removed.
You could think about contacting these commercial mold removal Knoxville TN companies even if you see less mold. If you see mold, there is probably more behind walls, in attics and elsewhere.
Check credentials before you hire a mold removal company. The State Business Licensing Division is a good place to get started, and you should check for approval by groups such as as the Contractor Connection, Restoration Industry Association and the Institute of Inspection, Cleaning and Restoration.
Mold left to grow releases spores, which fly like dandelion seeds and can harm your possessions very quickly. If not, parasitic fungi will keep eating on your structure and will destroy your possessions.