Specially-formulated enzyme/detergent blend quickly dissolves in water to attack organic waste and urinary salts without harsh acids or caustics. Just drop in each individual, premeasured packet and watch it go into action. An effervescing, specially-formulated blend of enzymes and detergents go to work immediately to attack organic waste and urinary salt, even in cool bowl water. Contains no harsh acids or caustics and won't harm plumbing fixtures, porcelain, metal, wood and painted surfaces. combines the advantages of pre measured with water-solubility So there's no guesswork, waste or messy clean-up. Formulated to clean toilets, urinals, showers, tubs, sinks and other restroom surfaces. Won't harm plumbing fixtures, porcelain, metal, wood and painted surfaces.