You shoud understand what mold is and where it thrives. Every kind of mold is a fungus, just like mushrooms and lichens, for example. The mold that is toxic to people is rare in the fungi world, meaning most kinds aren't dangerous. However, some molds are dangerous, so any mold you find indoors must be mitigated and completely removed.
The rule of thumb is to find a commercial mold removal company Hanover NH company to clean up the mold if it is more than 3 square feet.in area. If you see mold growth, there is probably more trapped in drywall and crevices and elsewhere.
Check licensing and certifications before you hire a mold removal company. You might also make sure the company knows and follows federal mold cleanup recommendations whether your mold is in a business or a residence.
You need to clean up any mold growth you come across to prevent further toxicity risk, and do it now. If you don't, parasitic fungi will continue to feast on your structure and can ruin your possessions.
commercial mold removal company Hanover NH