Powerful Stain Removal: Formulated with sodium bicarbonate and citric acid to dissolve limescale, urine deposits, and tough stains, leaving the toilet bowl sparkling clean. 3-IN-1 Multi-Function: Combines deep cleaning, deodorization, and long-term maintenance in one block, simplifying bathroom hygiene routines. Long-Lasting Performance: Each highly concentrated block lasts up to 30 days, providing continuous cleaning with every flush for extended freshness. Easy to Use: Simply drop into the toilet tankno scrubbing or direct contact needed. Automatically activates with each flush for hassle-free upkeep. Gentle on Surfaces: pH-balanced formula protects toilet porcelain and plumbing from corrosion, suitable for regular use in homes and rental properties. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin