Alcohol (such as ethanol) can effectively kill bacteria and viruses at a certain concentration, but it has a poor bactericidal effect on mold. Molds are usually more resistant to alcohol than bacteria and viruses because they have more complicated cell structures and life cycles. Even with high concentration of alcohol, it is difficult to completely eliminate mold and its spores. To deal with mold infection or pollution, it is best to adopt other methods, such as physical cleaning, disinfectants or special fungicides, to ensure the effective and thorough removal of mold. When dealing with mold problems, it is best to consult professionals and seek appropriate advice and guidance.