It's important to understand what mold is and why it grows. All molds are fungi, and share biology with mushrooms and lichens, for example. The mold that is dangerous to humans is relatively uncommon in the fungi world, meaning most kinds aren't harmful. However, some molds are dangerous, so any mold you find indoors must be cleaned up and completely removed.
Government experts recommend that you contact a mold remediation company San Marcos CA company for help if the mold growth takes up more than about 36 square inches. If you see mold, there is probably more behind walls, in attics and elsewhere.
Before you hire any company, make sure that they are licensed and registered properly and that they are certified by organizations such as the Contractor Connection, Restoration Industry Association and the Institute of Inspection, Cleaning and Restoration. You may also make sure the company knows and follows federal mold cleanup recommendations whether your mold is in a business or a residence.
You should remove any fungal growth you find to prevent further toxicity risk, and do it right away. If you don't, parasitic fungi will keep eating on your structure and will ruin your possessions.