Spend less time scrubbing your bird bath and more time enjoying it! Songbird Essentials 8 OZ Birdbath Protector ensures naturally clear water. It prevents stains, mineral deposits, organic contamination, and sludge. It is safe for birds, pets, and wildlife. Safe! No restrictions for wildlife when used as directed. Non-toxic, biodegradable, bacteria free, food grade all natural enzymes. Bird Bath Protector is not a chemical and needs time to work. Extremely dirty birdbaths may take several weeks to clean. For best results, start with a clean bird bath.