In reality, mold spores are present in nearly all indoor and outdoor environments. News media stories and inaccurate information about mold problems have caused the average person to misunderstand what mold restoration or remediation is really. The microscopic spores causing mold naturally occur in most all climates and are carried via air currents, into AC/heating systems and sometimes are transported on clothes or even house pets. These factors make it impossible to guarantee complete mold removal, although many businesses say this in their public advertising. This is impossible to guarantee for several reasons.