Soft Scrub Duo-Cubes In-Tank Automatic Toilet Cleaner, Net Content: 1.76 oz, Dark Blue/Light Blue, Odor/Scent: Sapphire Watters, Compositions: Sodium Sulfate, Sodium Coco-Sulfate, C12-18 Cocamide MEA, Sodium C14-17 Secondary Alkyl Sulfonate, Sodium Citrate, Fragrance, CI 42090 (Blue 1), Sodium Carbonate, Methyl Palmitate/Oleate, CI 77891 (Titanium Dioxide), 9,10-Anthracenedione, 1,4-bis[(2,4,6-trimethylphenyl)amino], Solvent Green 3, pH Range: 9.8 to 10.3Helps fight toilet ring, hard water and lime scale stainsSafe for toilet componentsEasy-to-useCleans up to 4 weeks