Enzyme Treatments for Mold and Mildew

Reannan Raine

Mold and mildew are not only unsightly and smelly, but they are also hazardous to your health. They should be cleaned off as soon as they are discovered. Enzyme treatments are effective and are not harmful to people, pets, plants or surfaces. Enzyme-based cleansers are the green ecologically friendly way to clean up mold and mildew.


Put on protective clothing and a respirator before applying the enzyme treatment. Even though enzyme treatments are generally nontoxic or harmful to humans, the mold and mildew are. The protective clothing and respirator are for protection against the mold and mildew. Enzymes work naturally to kill the mold and mildew. Spray the enzyme treatment on the affected area in accordance with the specific product manufacturer’s recommendation. Use a pressure sprayer for mold and mildew treatment on large outdoor areas like decks, patios, and house siding. Spray the entire affected area evenly with the product. Spray a few inches of surface area around where the mold or mildew is evident to kill any spores that are not yet easily visible. Allow the spray to set. Some products need to be left to dry for an hour, and some products only require a few minutes to kill the spores. The length of time required varies depending on the formula used by the manufacturer. Brush off or wipe away the dead mold or mildew.


Enzyme-based cleansers do not contain the harsh chemicals found in many commercial cleansers but are just as effective if not more so. There is a residual benefit to the use of enzyme-based cleansers. The enzymes left on the surface after the mold and mildew have been killed and wiped away will continue to work.

Moisture will cause the enzymes to be reactivated, which makes enzyme cleansers particularly well suited for the removal of mold and mildew because moisture is what allows the mold and mildew to flourish in the first place. After enzyme treatment, the moisture will naturally reactivate the enzymes, which will kill the mold and mildew before it has a chance to take hold and grow.

Another added benefit to using enzyme cleansers is odor neutralization. The enzymes will eliminate that moldy musty smell and will continue to neutralize the odor whenever dampness sets in. Use and store enzyme cleaning solutions in temperatures above freezing and below 170 degrees Fahrenheit. Use or storage in either temperature extreme will cause the enzymes to lose effectiveness.