Natural Enzyme-Based Family-Safe Let The Worm Do The Work The Natural Power of Enzymes: All living things contain enzymes. Enzymes are proteins that convert organic material into harmless nutrients and water. The human body uses about 75,000 of these microscopic workhorses to help perform essential tasks such as breathing and digesting food. Think of them as nature's recyclers. Enzymes are the key ingredient in Earthworm Mold & Mildew Treatment's formula. It removes mold stains, fungus stains and mildew stains from virtually any porous or non-porous surface, both inside or outdoors. It's biodegradable, earth-friendly and does not contain any caustic chemicals... so it's safe to use around children and pets.