TRI-BIO BIOFORMULA FOR PORTABLE & BIO-TOILETS ODOR CONTROLLER & WASTE DIGESTER, BY RESULT SURPASSES. MODERN CHEMICAL DEODORANTS AND MASKING AGENTS. SUPER CONCENTRATED - 50 DOSES IN 1 l BOTTLE. Immediately eliminates and controls bad odors, not just by masking them, but by removing the organics that caused them. Breaks down and digest waste and toilet tissue. Destroys harmful bacteria. Cleans toilets holding tank walls. Does not require special toilet tissue.