Specially Formulated for Smaller Fountains. This product uses two unique, proprietary technologies to prevent organic contaminants from forming (i.e.: crusty white scale deposits, iron, copper, hard water stains): one technology helps prevent the buildup of stains and mineral deposits on the birdbath or fountain surface; the second uses bio-enzymatic activity to keep water clear and free from the organic debris that can make the water cloudy. Will help to ensure clear, sparkling water that keeps water pumps free from organic debris. Safe for birds, fish, aquatic wildlife (fish, frogs), humans, pets, aquatic plants and lawns. All natural ingredients. Biodegradable and nontoxic.