Overtime, decorative birdbaths and fountains will develop microorganisms that affect your water quality. Organic contaminants and other mineral deposits may lead to a cloudy/murky appearance and possibly smelly water. It’s important to treat the water with a blend of naturally occurring beneficial bacteria that keeps your fountain or birdbath clean and clear by breaking down organic waste while reducing nutrients, which greatly improves the water. Prevents stains, sludge, mineral deposits and organic contaminants. All natural enzymes. Safe for people, pets, birds and other wildlife.