Ensures naturally clear water. Safe for Birds, Pets, and Wildlife. Prevents Stains, Sludge, Mineral Deposits, and Organic Contamination. Non-Toxic all natural Enzymes. Birdbath 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 birdbath. Note: This product is Safe. No restrictions for wildlife when used as directed. Non-toxic, Biodegradable, Bacteria Free, Food Grade Enzymes.