Click On The Downloads Tab for Product MSDS Sheet. Enzyme bowl block deodorizes, cleans and prevents scale buildup. Every flush tints water blue, while healthy bacteria eliminate odors and maintain drain lines. Lasts up to 1,500 flushes. Green Apple fragrance. Biodegradable materials. VOC compliant. Free from Phenol Ethoxylate surfactants and carcinogens. Free from chlorinated, butyl and harsh solvents. Free from ammonia and bleach compounds, phosphates and silicates. No phthalates and Alkylphenol ethoxylates. Recyclable packaging materials (plastic and boxes). Non-hazardous for shipment.. . . .