Soft Scrub Duo-Cubes are designed to provide a two-in-one cleaning action with every flush. The blue and white chambers contain a combination of bleaching agents and surfactants that work together to remove organic stains and hard water rings. These cubes are placed directly into the tank, where they dissolve at a controlled rate to maintain a consistent level of cleanliness in the bowl. The "Alpine Fresh" scent helps to neutralize bathroom odors, offering a more pleasant fragrance than standard chlorine-only tablets.
Tests show that these cubes are effective at bio-film removal and provide a low-effort maintenance solution for high-traffic secondary bathrooms. However, specifications indicate that the high alkaline nature of the formula can be aggressive toward certain metal tank bolts and rubber flappers over long periods of time. For the most consistent performance, it is helpful to place the cube away from the water intake valve to prevent it from dissolving too quickly or causing staining on the ceramic near the intake.
If you are concerned about the longevity of your tank's internal parts, the ACTIVE septic-safe tablets use a gentler gel-based formula.
Explore our complete range of "set-and-forget" bathroom solutions in the toilet bowl cleaners and brush systems section.
