Deep cleaning power: These blocks contain powerful cleaning agents that break down tough buildup like urine scale, water stains, and organic residue. With every flush, they automatically activate to remove yellow stains and grime, reducing long-term buildup and keeping your toilet looking clean with minimal effort. Hands-free cleaning: Simply drop the block into your toilet tank—no need to handle it directly. It dissolves evenly without sticking to the tank or bowl and won't leave behind clumps or residue. It's a hassle-free alternative to daily scrubbing, perfect for anyone who wants to save time and effort on cleaning. Effective microorganism reduction: By targeting Escherichia coli, Staphylococcus aureus and Candida albicans, etc., it effectively reduces microorganisms. Every time you flush, it releases water, helping you keep the bathroom clean and healthy every day. Floral scent: Infused with a subtle floral fragrance, the block gently releases a fresh, pleasant scent that neutralizes odors after every flush. The scent lingers between uses, helping your bathroom stay fresh and inviting. Safe on toilet surfaces: Made for long-lasting use, this gentle formula helps preserve your toilet's finish without causing damage. Free from phosphates and harsh chemicals, it is safe for glazed ceramic surfaces and standard tank materials. Color: As shown in the picture.