Most people do not know that mold will eat wood. It can cause worse damage than termites. I have seen it in old basements. It gets established in the floor joists and subflooring of the floor above. I have seen wood crumble into dust due to mold. Before it gets this bad, you can use commercial mold remediation services to get rid of it. It really is more of a matter of controlling it than actually completely eradicating it. Mold spores are everywhere in the environment, even on us and in us. There are all kinds of molds too. Some release dangerous mycotoxins that can make you very sick.
Mold eats organic material. Organics are anything that use to be alive. This includes wood, rubber, paper and cardboard. Mold gets established when there is a food source, heat and moisture. There are different things that can be done to rid the house of a majority of mold spores. However, it has to be isolated and properly removed. Otherwise you just spread it to another part of your house or commercial building. In some instances professional freezing equipment is use to sort of pressure wash it away using carbon dioxide that is very cold. Sometimes a little deconstruction is necessary to get rid of infested organic materials.
It is not a job for amateurs. Also, bleach will not get rid of mold infestations in many instances. A very light infestation in a tiny spot say on tile or another hard surface can be removed with bleach. This is like mildew in a shower we are talking here. When it is in the wood, more has to be done to get rid of mold. Professional commercial mold remediation services have the tools and equipment to control mold. Usually dehumidification or other moisture and heat control will be necessary.