This automatic, toilet bowl cleaner is designed for in-tank use. It effectively removes stains and deodorizes, preventing scale and mildew buildup. The unscented formula features a 22% surfactant blend and colors water blue with each flush. Each unit lasts up to 30 days, making this cleaner ideal for maintaining long-term cleanliness in high-traffic restrooms. Delivers consistent cleaning and odor control, reducing the need for frequent scrubbing.