Removes stains and water deposits from bowls quickly and easily. · Cleans, brightens and removes stains from plastic and porcelain bowls · Specially produced for marine and RV use · Will not damage gaskets or valves · Does not contain harsh chemicals · Kills odor - leaves the bowl fresh and clean · No harsh rubbing or scrubbing required · No influence on the effect of most septic tank treatments · Lubricates while it cleans